refactor(Type): merge Type and ConcreType<?> into Type<?> (#10616)

Closes #9729

BREAKING CHANGE:

`Type` is now `Type<T>` which means that in most cases you have to
use `Type<any>` in place of `Type`.

We don't expect that any user applications use the `Type` type.

modules/@angular/router/src/router.ts

@@ -145,7 +145,7 @@ export class Router {
    * Creates the router service.
    */
   constructor(
-      private rootComponentType: Type, private resolver: ComponentResolver,
+      private rootComponentType: Type<any>, private resolver: ComponentResolver,
       private urlSerializer: UrlSerializer, private outletMap: RouterOutletMap,
       private location: Location, private injector: Injector, loader: NgModuleFactoryLoader,
       config: Routes) {