Add a quarkus-devservices runtime module

[holly-cummins]

See discussion here: https://quarkusio.zulipchat.com/#narrow/channel/187038-dev/topic/should.20we.20add.20a.20quarkus-devservices.20runtime.20module.3F/with/515359790

#47602 added classes that logically should be in devservices-runtime, but adding that would break any existing extension that uses devservices. We need to add an exception to the validator for that module.

[quarkus-bot]

You added a link to a Zulip discussion, please make sure the description of the issue is comprehensive and doesn't require accessing Zulip

_{This message is automatically generated by a bot.}

[quarkus-bot]

/cc @geoand (devservices)