An `addDependency` schematics rule has been added to the newly introduced `utility` subpath export for the `@schematics/angular` package.
This new rule allows for adding a package as a dependency to a `package.json`. By default the `package.json` located
at the schematic's root will be used. The `packageJsonPath` option can be used to explicitly specify
a `package.json` in a different location. The type of the dependency can also be specified instead
of the default of the `dependencies` section by using the `type` option for either development or peer dependencies.
