Support Declarative Linking Annotations on Methods

Currently the @InjectLink and the @InjectLinks annotations have a @Target that is limited to types (Field & Type). In cases where the response object is an interface, and specifically an interface that is represented as a Proxy instance, the annotations can't be used since there are no field declarations on an interface.

This is a request to full support the annotations when they appear on the "getters" within the interface (assuming a corresponding setter is available).