Support controller method parameter annotations on an interface

[JamesPeters98]

It's currently not possible to define interfaces with the @Argument parameter annotation.

i,e:

interface HelloWorld {
  @QueryMapping
  String helloWorld(@Argument String name);
}

@Controller
class HelloWorldImpl implements HelloWorld {
  @Override
  String helloWorld(String name) {
    return "Hello "+name;
  }
}

This doesn't work and requires the implementation to also be annotated.