Add a global --offline config key

[Gedochao]

Fixes #3024

[Gedochao]

This consistently fails on (for Linux/Windows platforms)

integration.test.jvm 4 tests failed: 
  scala.cli.integration.RunTestsDefault.Java code accepted as piped input scala.cli.integration.RunTestsDefault.Java code accepted as piped input
  scala.cli.integration.RunTestsDefault.Java code with multiple classes accepted as piped input scala.cli.integration.RunTestsDefault.Java code with multiple classes accepted as piped input
  scala.cli.integration.RunTestsDefault.snippets mixed with piped Scala code and existing sources allow for cross-references scala.cli.integration.RunTestsDefault.snippets mixed with piped Scala code and existing sources allow for cross-references
  scala.cli.integration.RunTestsDefault.Java URL scala.cli.integration.RunTestsDefault.Java URL

I've no idea what is the cause, but it smh is tied to running pure Java code.
Can't see how it's tied to the changes.
This also seems to not happen on MacOS for some reason.

The full (-v -v -v) output from the failing test on the CI (it seems to be a similar failure for all of the failing tests):

>==== Running 'Java code accepted as piped input' from RunPipedSourcesTestDefinitions
Reading stdin
Done reading stdin (110 B)
Ignoring error during setup-ide: Found virtual inputs: <stdin>-java-file
Checking for a running Bloop server at /home/runner/.local/share/scalacli/bloop/daemon ...
Attempting to connect to Bloop server /home/runner/.local/share/scalacli/bloop/daemon ...
Connection attempt result: Some(Right(java.nio.channels.SocketChannel[connected local= remote=/home/runner/.local/share/scalacli/bloop/daemon/socket]))
nailgun debug: Sending arguments '' to Nailgun server
nailgun debug: Sending environment variables to Nailgun server
nailgun debug: Sending working directory /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-223 to Nailgun server
nailgun debug: Sending command to about Nailgun server
nailgun debug: Finished sending command information to Nailgun server
nailgun debug: Starting thread to read stdin...
nailgun debug: Received action Print([B@139f8548) from Nailgun server
nailgun debug: Received action Print([B@6302db3b) from Nailgun server
nailgun debug: Received action Print([B@55eb9bf6) from Nailgun server
nailgun debug: Received action Print([B@7ef1d4bb) from Nailgun server
nailgun debug: Received action Print([B@69287da6) from Nailgun server
nailgun debug: Received action Print([B@1c06a8bb) from Nailgun server
nailgun debug: Received action Exit(0) from Nailgun server
nailgun debug: Waiting for stdin thread to finish...
nailgun debug: Waiting for heartbeat thread to finish...
nailgun debug: Returning exit code...
Checking for a running Bloop server at /home/runner/.local/share/scalacli/bloop/daemon ...
Attempting to connect to Bloop server /home/runner/.local/share/scalacli/bloop/daemon ...
Connection attempt result: Some(Right(java.nio.channels.SocketChannel[connected local= remote=/home/runner/.local/share/scalacli/bloop/daemon/socket]))
Checking for a running Bloop server at /home/runner/.local/share/scalacli/bloop/daemon ...
Attempting to connect to Bloop server /home/runner/.local/share/scalacli/bloop/daemon ...
Connection attempt result: Some(Right(java.nio.channels.SocketChannel[connected local= remote=/home/runner/.local/share/scalacli/bloop/daemon/socket]))
nailgun debug: Sending arguments '' to Nailgun server
nailgun debug: Sending environment variables to Nailgun server
nailgun debug: Sending working directory /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-223 to Nailgun server
nailgun debug: Sending command to about Nailgun server
nailgun debug: Finished sending command information to Nailgun server
nailgun debug: Starting thread to read stdin...
nailgun debug: Received action Print([B@1b421dc1) from Nailgun server
nailgun debug: Received action Print([B@5a8970cd) from Nailgun server
nailgun debug: Received action Print([B@4aff1e39) from Nailgun server
nailgun debug: Received action Print([B@4b32c35b) from Nailgun server
nailgun debug: Received action Print([B@401563e9) from Nailgun server
nailgun debug: Received action Print([B@518b7c3e) from Nailgun server
nailgun debug: Received action Exit(0) from Nailgun server
nailgun debug: Waiting for stdin thread to finish...
nailgun debug: Waiting for heartbeat thread to finish...
nailgun debug: Returning exit code...
Opening BSP connection with bloop
Bloop BSP connection waiting at local:/home/runner/.cache/scalacli/bsp-sockets/proc-57272
BSP connection at /home/runner/.cache/scalacli/bsp-sockets/proc-57272 not found, waiting 100 milliseconds
nailgun debug: Sending arguments '--protocol local --socket /home/runner/.cache/scalacli/bsp-sockets/proc-57272' to Nailgun server
nailgun debug: Sending environment variables to Nailgun server
nailgun debug: Sending working directory /tmp/6848826472449148461/.scala-build to Nailgun server
nailgun debug: Sending command to bsp Nailgun server
nailgun debug: Finished sending command information to Nailgun server
nailgun debug: Starting thread to read stdin...
nailgun debug: Received action Print([B@2c785687) from Nailgun server
The server is listening for incoming connections at local:///home/runner/.cache/scalacli/bsp-sockets/proc-57272...
nailgun debug: Received action Print([B@5af9fafa) from Nailgun server
Accepted incoming BSP client connection at local:///home/runner/.cache/scalacli/bsp-sockets/proc-57272
BSP connection at /home/runner/.cache/scalacli/bsp-sockets/proc-57272 opened
Connected to Bloop via BSP at local:/home/runner/.cache/scalacli/bsp-sockets/proc-57272
Connected to Bloop via BSP at local:/home/runner/.cache/scalacli/bsp-sockets/proc-57272
Sending buildInitialize BSP command to Bloop
nailgun debug: Received action Print([B@1d9efda5) from Nailgun server
request received: build/initialize
nailgun debug: Received action Print([B@22f50f7f) from Nailgun server
BSP initialization handshake complete.
Fetching List(), adding List(IvyRepository(Pattern(List(Const(file:///home/runner/.cache/scalacli/local-repo/1.5.1-4-a0c0e5//), Var(organisation), Const(/), Var(module), Const(/), Opt(List(Const(scala_), Var(scalaVersion), Const(/))), Opt(List(Const(sbt_), Var(sbtVersion), Const(/))), Var(revision), Const(/), Var(type), Const(s/), Var(artifact), Opt(List(Const(-), Var(classifier))), Const(.), Var(ext))), None, None, true, true, true, false, None, true))
Writing bloop project in /tmp/6848826472449148461/.scala-build/.bloop/6848826472449148461_3f12ae3dcd-1c5962[5587](https://github.com/VirtusLab/scala-cli/actions/runs/11142290538/job/30964925808?pr=3216#step:4:5588).json
Listing BSP build targets
Compiling 6848826472449148461_3f12ae3dcd-1c59625587 with Bloop
Received onBuildLogMessage from bloop: LogMessageParams [
  type = WARNING
  task = null
  originId = null
  message = "Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.12.20/scala-reflect-2.12.20.jar doesn't exist!"
]
Warning: Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.12.20/scala-reflect-2.12.20.jar doesn't exist!
Received onBuildLogMessage from bloop: LogMessageParams [
  type = WARNING
  task = null
  originId = null
  message = "Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.12.20/scala-compiler-2.12.20.jar doesn't exist!"
]
Warning: Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.12.20/scala-compiler-2.12.20.jar doesn't exist!
Received onBuildLogMessage from bloop: LogMessageParams [
  type = WARNING
  task = null
  originId = null
  message = "Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-xml_2.12/2.3.0/scala-xml_2.12-2.3.0.jar doesn't exist!"
]
Warning: Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-xml_2.12/2.3.0/scala-xml_2.12-2.3.0.jar doesn't exist!
Received onBuildLogMessage from bloop: LogMessageParams [
  type = WARNING
  task = null
  originId = null
  message = "Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-sbt/jline/jline/2.14.7-sbt-9c3b6aca11c57e339441442bbf58e550cdfecb79/jline-2.14.7-sbt-9c3b6aca11c57e339441442bbf58e550cdfecb79.jar doesn't exist!"
]
Warning: Scala instance jar /home/runner/work/scala-cli/scala-cli/out/integration/tmpDirBase.dest/working-dir/run-1399714906/test-152/local-repo/https/repo1.maven.org/maven2/org/scala-sbt/jline/jline/2.14.7-sbt-9c3b6aca11c57e339441442bbf58e550cdfecb79/jline-2.14.7-sbt-9c3b6aca11c57e339441442bbf58e550cdfecb79.jar doesn't exist!
Exception in thread "main" java.util.concurrent.ExecutionException: org.eclipse.lsp4j.jsonrpc.MessageIssueException: Message could not be parsed.
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073)
	at scala.build.Bloop$.compile(Bloop.scala:53)
	at scala.build.compiler.BloopCompiler.helper$1(BloopCompiler.scala:39)
	at scala.build.compiler.BloopCompiler.compile(BloopCompiler.scala:54)
	at scala.build.Build$.buildOnce$$anonfun$1(Build.scala:1154)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.buildOnce(Build.scala:1125)
	at scala.build.Build$.build$$anonfun$2(Build.scala:484)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.build(Build.scala:472)
	at scala.build.Build$.doBuildScope$1$$anonfun$1(Build.scala:350)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.doBuildScope$1(Build.scala:333)
	at scala.build.Build$.doBuild$1$$anonfun$1(Build.scala:355)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.doBuild$1(Build.scala:308)
	at scala.build.Build$.buildScopes$1$$anonfun$1(Build.scala:417)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.buildScopes$1(Build.scala:416)
	at scala.build.Build$.build$$anonfun$1(Build.scala:446)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.build(Build.scala:281)
	at scala.build.Build$.build$$anonfun$3$$anonfun$1(Build.scala:626)
	at scala.util.Either.flatMap(Either.scala:360)
	at scala.build.compiler.ScalaCompilerMaker.withCompiler(ScalaCompilerMaker.scala:37)
	at scala.build.compiler.ScalaCompilerMaker.withCompiler$(ScalaCompilerMaker.scala:9)
	at scala.build.compiler.BloopCompilerMaker.withCompiler(BloopCompilerMaker.scala:14)
	at scala.build.Build$.build$$anonfun$3(Build.scala:611)
	at scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
	at scala.build.Build$.build(Build.scala:596)
	at scala.cli.commands.run.Run$.runCommand(Run.scala:334)
	at scala.cli.commands.default.Default.runCommand(Default.scala:69)
	at scala.cli.commands.default.Default.runCommand(Default.scala:40)
	at scala.cli.commands.ScalaCommand.run(ScalaCommand.scala:390)
	at scala.cli.commands.ScalaCommand.run(ScalaCommand.scala:371)
	at caseapp.core.app.CaseApp.main(CaseApp.scala:166)
	at scala.cli.commands.ScalaCommand.main(ScalaCommand.scala:356)
	at caseapp.core.app.CommandsEntryPoint.main(CommandsEntryPoint.scala:370)
	at scala.cli.ScalaCliCommands.main(ScalaCliCommands.scala:125)
	at scala.cli.ScalaCli$.main0(ScalaCli.scala:320)
	at scala.cli.ScalaCli$.main(ScalaCli.scala:124)
	at scala.cli.ScalaCli.main(ScalaCli.scala)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at coursier.bootstrap.launcher.a.a(Unknown Source)
	at coursier.bootstrap.launcher.ResourcesLauncher.main(Unknown Source)
Caused by: org.eclipse.lsp4j.jsonrpc.MessageIssueException: Message could not be parsed.
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponseIssues(RemoteEndpoint.java:358)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handle(RemoteEndpoint.java:317)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:198)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)
nailgun debug: Received action Print([B@4c57a9c8) from Nailgun server
BSP server stopped
nailgun debug: Received action Exit(0) from Nailgun server
nailgun debug: Waiting for stdin thread to finish...
nailgun debug: Waiting for heartbeat thread to finish...
nailgun debug: Returning exit code...
X==== Finishing 'Java code accepted as piped input' from RunPipedSourcesTestDefinitions

Needs further investigation.

[tgodzik]

Looks like maybe the jars indeed do not exist and only poms? Wasn't there a problem with that?