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/cached-dependencies/src/utils/inputs.ts

@@ -0,0 +1,61 @@
+/**
+ * Manage inputs and env variables.
+ */
+import * as core from '@actions/core';
+import {
+  Inputs,
+  EnvVariableNames,
+  InputName,
+  DefaultInputs,
+} from '../constants';
+
+export function getInput(name: keyof Inputs): string {
+  const value = core.getInput(name);
+  if (name === InputName.Parallel) {
+    return value.toUpperCase() === 'TRUE' ? value : '';
+  }
+  return value || DefaultInputs[name] || '';
+}
+
+/**
+ * Update env variables associated with some inputs.
+ * See: https://github.com/actions/toolkit/blob/5b940ebda7e7b86545fe9741903c930bc1191eb0/packages/core/src/core.ts#L69-L77 .
+ *
+ * @param {Inputs} inputs - The new inputs to apply to the env variables.
+ */
+export function setInputs(inputs: Inputs): void {
+  for (const [name, value] of Object.entries(inputs)) {
+    const envName = EnvVariableNames.has(name)
+      ? name
+      : `INPUT_${name.replace(/ /g, '_').toUpperCase()}`;
+    process.env[envName] = value;
+  }
+}
+
+/**
+ * Apply new inputs and execute a runner function, restore them when done.
+ *
+ * @param {Inputs} inputs - The new inputs to apply to the env variables before
+ *                          excuting the runner.
+ * @param {runner} runner - The runner function that returns a promise.
+ * @returns {Promise<any>} - The result from the runner function.
+ */
+export async function applyInputs(
+  inputs: Inputs,
+  runner: () => Promise<void>,
+): Promise<any> {
+  const originalInputs: Inputs = Object.fromEntries(
+    Object.keys(inputs).map(name => [
+      name,
+      EnvVariableNames.has(name) ? process.env[name] : core.getInput(name),
+    ]),
+  );
+  exports.setInputs(inputs);
+  const result = await runner();
+  exports.setInputs(originalInputs);
+  return result;
+}
+
+export function maybeArrayToString(input: string[] | string) {
+  return Array.isArray(input) ? input.join('\n') : input;
+}