Nozomu Miyamoto

feat(js): add `srcRootForCompilationRoot` option to tsc executor

5

## Current Behavior Not support `srcRootForCompilationRoot` option in `@nrwl/js:tsc` executor. This option have been existed on before package(`@nrwl/node:package`). Now, we can build directory structure like not `dist/libs//` but only `dist/libs//src/`...

fix(schematics): rewrite `projectFromRc` and add spec file

3

### Checklist - [x] Issue number for this PR: https://github.com/angular/angularfire/issues/3077 (required) - [x] Docs included?: no - [x] Test units included?: yes - [x] In a clean directory, `yarn install`,...