Add feature request voting process github actions to the repo.

(cherry picked from commit c47195a)

…to `4.0.1`

Changes that improve performance:
- use resolve data already present in most modules
- use throwIfNoEntry option on filesystem operations to improve performance

Currently, the `readme.md` also contains information on how to build and test the CLI which isn't useful to most users. With this change we move this information into a seperate document.

(cherry picked from commit 40fb1a1)

Update readme to match that of angular/angular

(cherry picked from commit 3829fb2)

…lusion list

Similar to #21739, `whatwg-url` seems to suffer from the same issue as #21735

```ts
const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () {}).prototype);
```

(cherry picked from commit 1842bd5)

…description

(cherry picked from commit 378ec0b)

With this change we remove the hard coded app-shell test that is currently failing in Node.Js 12.

We can remove this test, because this is a duplicate of https://github.com/angular/angular-cli/blob/master/tests/legacy-cli/e2e/tests/build/build-app-shell-with-schematic.ts which app-shell is generated using schematics.

(cherry picked from commit c95ab70)

…enames hashing mechanism

Previously we used hash which resulted in a unique hash generated for every build even when the contents of the files didn't differ.

More info: https://webpack.js.org/guides/caching/#output-filenames

(cherry picked from commit dc1817a)

(cherry picked from commit 10adcea)

(cherry picked from commit 8c65ad1)

With this change we mark the deprecated `@angular-devkit/build-optimizer` package as a private and stop publishing it to NPM.

Closes #22600

(cherry picked from commit bf733d6)

Previously, the `@angular/cli` readme contained a lot of un-needed information for application users

(cherry picked from commit fafb9dd)