2.2.0 Snowpack3, optimized ngcc, package detection for ngcc

- Snowpack 3 support (accept both config.buildOptions.sourcemap and config.buildOptions.sourceMaps)
- Now calls `ngcc` function from `@angular/compiler-cli/ngcc` instead of using execa which is slower to start up
- Now uses typescript to scan all node_modules import, and feed to ngcc

README.md

@@ -33,7 +33,7 @@ npm i --save-dev angular-snowpack-plugin
 | ---------------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- |
 | `angularJson`    | `string`   | Relative path to `angular.json` of your Angular project.                                                                                                                                                                                        | `angular.json`                                                              |
 | `angularProject` | `string`   | Target project of the build as according to `angular.json`                                                                                                                                                                                      | default project defined in `angular.json`                                   |
-| `ngccTargets`    | `string[]` | `ngcc` targets that the plugin will attempt to run `ngcc` with on each startup, values here will be extending the default value.                                                                                                                | `['@angular/core', '@angular/common', '@angular/platform-browser-dynamic']` |
+| `ngccTargets`    | `string[]` | Explicit `ngcc` targets that the plugin will attempt to run `ngcc` with on each startup, values here will be extending the default value.                                                                                                                | Detected `node_modules` packages imported in source files |
 | `errorToBrowser` | `boolean`  | Determines whether a type-check error will be pushed to the browser as a build error, note that this only applies to dev mode, build and first compilation will push error to browser regardless, `false` will mimic the behavior of `ng serve` | `true`                                                                      |
 | `useHmr`         | `boolean`  | Enables hot-module replacement\(HMR\) based on Angular 11 HMR code, tested to work on Angular >= 9 with ivy enabled                                                                                                                             | `false`                                                                     |