Warn when using Injected[T] in Wireup services

[maldoinc]

The use of Injected[T]/ Annotated[T, Inject()] is required when Wireup injects in foreign targets but not necessary in its own services. If a Wireup service has any annotations of that form it should warn and let the user know it's unnecessary. This can be done in the registry when adding dependencies by checking for instances of EmptyContainerInjectionRequest which is what Inject() produces.