build: inline external Github Actions to unblock CI (#12241)

* build: inline cached-dependencies to unblock CI

* Run E2E on pull_request on;y

* Inline all external actions

* Checkout needed for internal actions

Also fixes pre-commit

* Add missing files

.github/actions/file-changes-action/src/main.ts

@@ -0,0 +1,40 @@
+import {setFailed as coreSetFailed} from '@actions/core'
+import {getInputs, inferInput} from './InputHelper'
+import {writeOutput, writeFiles, sortChangedFiles} from './FilesHelper'
+import {getChangedFiles, initClient} from './GithubHelper'
+import {errorMessage} from './UtilsHelper'
+// figure out if it is a PR or Push
+export async function run(): Promise<void> {
+  try {
+    // get inputs
+    const inputs = getInputs()
+    // parse input
+    const inferred = inferInput(
+      inputs.pushBefore,
+      inputs.pushAfter,
+      inputs.prNumber
+    )
+    // prepare client
+    const client = initClient(inputs.githubToken)
+    // get changed files
+    const changedFilesArray = await getChangedFiles(
+      client,
+      inputs.githubRepo,
+      inferred
+    )
+    // sort changed files
+    const changedFiles = sortChangedFiles(changedFilesArray)
+    Object.keys(changedFiles).forEach(key => {
+      // write file output
+      writeFiles(inputs.fileOutput, key, changedFiles[key])
+      // write output vars
+      writeOutput(inputs.output, key, changedFiles[key])
+    })
+  } catch (error) {
+    const pError = JSON.parse(error.message)
+    coreSetFailed(errorMessage(pError.from, pError))
+    throw new Error(JSON.stringify(pError))
+  }
+}
+/* istanbul ignore next */
+if (!(process.env.INPUT_MOCK === 'true')) run()