Issue: Injection on EJB interceptors is not working #3

This commit fixes the injection failure in @EJB Interceptors. See issue #3.

* Implemented a approach based on the @InterceptorBinding mechanism. The solution replaces @Interceptors() in processed beans with a global interceptor wrapper/proxy. The wrapper delegates the InvocationContext to the modified InterceptorBinding.
* Implemented a cache optimization regarding the modification of Interceptor bindings of @EJB Interceptors.
* Created Sample EJB together with a basic @AroundInvoke Interceptor to
verify the NPE in EJB Interceptors proposed by @agori.
* Fixed debug log in EntityManagerProducer
* Processing @Interceptors annotation and replacing with altered InterceptionBindings
* Saving altered InterceptorBindings in GlobalInterceptorImpl (interceptor cache)