Provide rest-client-<serialization> extensions

[gsmet]

Relates to: #8063

[geoand]

I also tested the rest-client-quickstart with the quarkus-rest-client-jsonb and it worked like a charm! Furthermore I also checked in an application that only used Vert.x for the server part and quarkus-rest-client-jackson for the client and again everything worked great.

The only thing I am not excited about is that for the tests in the new modules, the meaningful assertions are done in the application code, making it hard to see the real error if a test fails.
But that shouldn't be a problem since the applications are very small, so nailing down the cause of any future test failure should be easy.

[geoand]

This is very useful for users, thanks!