[weld-dev] AnnotatedType implementation in weld tests

[Stuart Douglas]

I would like to write some tests for the SPI, however I need a concrete implementation of Annotated*, which are available in weld-extensions. Should I 

- Copy paste them into weld-test
- Add a dependency on weld-extensions 
- Split them off into a new module (weld-utils?) and add a dependency on that
- something else altogether

Stuart