Move integration test entries to input/ (vercel#3590)

Moves all next-dev integration test code into a parent `input/`
directory, like our snapshot tests. This prepares for introducing
`issues` snapshots to next-dev integration tests.

Test Plan: CI

crates/next-dev-tests/tests/integration.rs

@@ -132,11 +132,9 @@ async fn run_test(resource: &str) -> JestRunResult {
         path.to_str().unwrap()
     );
 
-    // Count the number of dirs _under_ crates/next-dev/tests
-    let test_entry = Path::new(resource).join("index.js");
     let package_root = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
     let workspace_root = package_root.parent().unwrap().parent().unwrap();
-    let project_dir = workspace_root.join(resource);
+    let project_dir = workspace_root.join(resource).join("input");
     let requested_addr = get_free_local_addr().unwrap();
 
     let mock_dir = path.join("__httpmock__");
@@ -151,9 +149,7 @@ async fn run_test(resource: &str) -> JestRunResult {
         "@turbo/pack-test-harness".to_string(),
         "".to_string(),
     ))
-    .entry_request(EntryRequest::Relative(
-        sys_to_unix(test_entry.strip_prefix(resource).unwrap().to_str().unwrap()).to_string(),
-    ))
+    .entry_request(EntryRequest::Relative("index.js".to_owned()))
     .eager_compile(false)
     .hostname(requested_addr.ip())
     .port(requested_addr.port())

crates/next-dev-tests/tests/integration/next/font-google/basic/pages/index.js → crates/next-dev-tests/tests/integration/next/font-google/basic/input/pages/index.js

@@ -18,7 +18,7 @@ export default function Home() {
 function runTests() {
   it("returns structured data about the font styles from the font function", () => {
     expect(interNoArgs).toEqual({
-      className: "className__inter_34ab8b4d__77c0d301",
+      className: "className__inter_34ab8b4d__64ed1f97",
       style: {
         fontFamily: "'__Inter_34ab8b4d'",
         fontStyle: "normal",
@@ -35,12 +35,12 @@ function runTests() {
 
   it("supports declaring a css custom property (css variable)", async () => {
     expect(interWithVariableName).toEqual({
-      className: "className__inter_c6e282f1__d812ce46",
+      className: "className__inter_c6e282f1__a8cc5613",
       style: {
         fontFamily: "'__Inter_c6e282f1'",
         fontStyle: "normal",
       },
-      variable: "variable__inter_c6e282f1__d812ce46",
+      variable: "variable__inter_c6e282f1__a8cc5613",
     });
 
     const matchingRule = await getRuleMatchingClassName(