[Sling Models] Support Delegate Pattern for Models adapted from interfaces

public interface Something {
	
	String getText();

        String getOther();

}

@Model(adaptable = Resource.class, adapter = Something.class, resourceType = "myco/something")
public class SomethingImpl implements Something {
	
	@Inject
	private String text;

        @Inject
        private String other;

	public String getText() {
		return text;
	}
        public String getOther() {
                return other;
         }

}

                @Self @Via(type = ResourceSuperType.class)
                private Something delegate;

                @Self @Via(value = “some/other/resourceType”, type = ForcedResourceType.class)
                private Something delegate;