message: feat(dev-infra): support typescript config file
  Previously ng-dev loaded the config through a javascript file, this
  change allows for the loaded file to be either javascript or
  typescript.  This enables configurations to be written with type
  safety.
  PR Close
diff: import {join} from 'path';
  import {exec} from 'shelljs';
  -// The filename expected for creating the ng-dev config.
  -const CONFIG_FILE_NAME = '.ng-dev-config.js';
  +// The filename expected for creating the ng-dev config, without the file
  +// extension to allow either a typescript or javascript file to be used.
  +const CONFIG_FILE_NAME = '.ng-dev-config';
  /**
  * Gets the path of the directory for the repository base.
  