Add Scalatra 3.0 examples

3.0/async/pekko-examples/.gitignore

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+## generic files to ignore
+*~
+*.lock
+*.DS_Store
+*.swp
+*.out
+
+# rails specific
+*.sqlite3
+config/database.yml
+log/*
+tmp/*
+
+# java specific
+*.class
+
+# python specific
+*.pyc
+
+# xcode/iphone specific
+build/*
+*.pbxuser
+*.mode2v3
+*.mode1v3
+*.perspective
+*.perspectivev3
+*~.nib
+
+# akka specific
+logs/*
+
+# sbt specific
+target/
+project/boot
+lib_managed/*
+project/build/target
+project/build/lib_managed
+project/build/src_managed
+project/plugins/lib_managed
+project/plugins/target
+project/plugins/src_managed
+project/plugins/project
+
+core/lib_managed
+core/target
+pubsub/lib_managed
+pubsub/target
+
+# eclipse specific
+.metadata
+jrebel.lic
+.settings
+.classpath
+.project
+
+.ensime*
+*.sublime-*
+.cache
+
+# intellij
+*.eml
+*.iml
+*.ipr
+*.iws
+.*.sw?
+.idea
+
+# paulp script
+/.lib/

3.0/async/pekko-examples/README.md

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+# pekko-examples #
+
+Corresponds to the guide at [http://scalatra.org/guides/3.0/async/pekko.html](http://scalatra.org/guides/3.0/async/pekko.html)
+
+## Build & Run ##
+
+```sh
+$ git clone https://github.com/scalatra/scalatra-website-examples.git
+$ cd scalatra-website-examples/3.0/async/pekko-examples
+$ chmod +x sbt
+$ ./sbt ~jetty:start
+```
+
+First, open [http://localhost:8080/ask](http://localhost:8080/ask) in your browser. You'll see the "question and answer" in the browser.
+
+Second, Open [http://localhost:8080/](http://localhost:8080/) in your browser. You'll see the "question and answer" in your terminal.

3.0/async/pekko-examples/build.sbt

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+organization := "com.example"
+name := "Pekko Examples"
+version := "0.1.0-SNAPSHOT"
+scalaVersion := "3.3.1"
+
+val ScalatraVersion = "3.0.0"
+
+libraryDependencies ++= Seq(
+  "org.apache.pekko"  %% "pekko-actor"             % "1.0.0" cross(CrossVersion.for3Use2_13),
+  "org.apache.pekko"  %% "pekko-http"              % "1.0.0" cross(CrossVersion.for3Use2_13),
+  "org.scalaj"        %% "scalaj-http"             % "2.4.2" cross(CrossVersion.for3Use2_13),
+  "ch.qos.logback"    %  "logback-classic"         % "1.4.11"        % Provided,
+  "org.scalatra"      %% "scalatra-jakarta"        % ScalatraVersion,
+  "org.scalatra"      %% "scalatra-specs2-jakarta" % ScalatraVersion % "test",
+  "org.eclipse.jetty" %  "jetty-webapp"            % "11.0.15"       % "provided",
+  "jakarta.servlet"   %  "jakarta.servlet-api"     % "5.0.0"         % "provided"
+)
+
+enablePlugins(JettyPlugin)
+
+Jetty / containerLibs := Seq("org.eclipse.jetty" % "jetty-runner" % "11.0.15" intransitive())

3.0/async/pekko-examples/project/build.properties

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+sbt.version=1.9.6

3.0/async/pekko-examples/project/plugins.sbt

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+addSbtPlugin("com.earldouglas" % "xsbt-web-plugin" % "4.2.4")
+scalacOptions ++= Seq("-unchecked", "-deprecation", "-feature")