let InjectFactory can be custom definition for some special method

[zhuyou1234]

in resteasy core, when I want to verify some special args.i define method like:
@post
public Response createXXX(@NotNull @PathParam("transportId") final String transportId,JsonObject payload)

@get
public Response getXXX(@NotNull @PathParam("transportId") final String transportId)

when I just want verify post request payload is a right jsonschema,and hope it can be a common validation.i cannot define directly a interceptor, so I add a Jsonschema annotation, and hope add a custom MethodInjectorImpl for this metod which is annotated by
Jsonschema,and only implement injectArguments to verify. but core code donot support this. so I add a pull request
@post
@jsonschema
public Response createXXX(@NotNull @PathParam("transportId") final String transportId,JsonObject payload)

@get
public Response getXXX(@NotNull @PathParam("transportId") final String transportId)
#3232
thanks