Add metrics-jersey support

Supports metrics-jersey.
Unfortunately only supports one metrics registry.
Really need a better way to wire in the metrics registry. Perhaps a MetricsRegistryProvider and an xml setting + annotation way of providing them.

Also unfortunately, always creates metrics registries in the SharedMetricRegistries.

Tried to find a better way to wire in spring beans but @InjectParam (which is jersey specific only) did not work. This class likely works with non-jersey jaxrs implementations but I have not tested them.

As before, i can create unit tests for this if you want to merge them in, however these have been manually tested and do work.