Alan Agius 6732294ff3 refactor(@angular-devkit/build-angular): remove file-loader dependency
`file-loader` resolves `import/require()` on a file into a url. This is non standard, undocumented, unsupported Webpack specific functionality. This was introduced in the Angular CLI  before `postcss-cli-resources` existed and was never removed.

Using `file-loader` and `postcss-cli-resources` are no longer needed with Webpack 5, because of the introduction of [Assets Modules](https://webpack.js.org/guides/asset-modules/).

BREAKING CHANGE:

The unsupported/undocumented, Webpack specific functionality to `import`/`require()` a non-module file has been removed.

Before
```js
import img from './images/asset.png';
```

After
```html
<img src="images/asset.png">
```
2021-02-04 08:42:57 +01:00
..

Angular Webpack Build Facade

WIP