kafka: better integration with quarkus kafka extension

[lburgazzoli]

See: quarkusio/quarkus#15631 (comment)

[jamesnetherton]

@lburgazzoli please can you expand on this a bit?

Is the comment you refer to hinting that we should use the Map of Kafka properties produced by quarkus-kafka-client for configuring the Camel component?

[lburgazzoli]

I admin I've opened this mainly as a note to myself but never had the time to explore what exactly the quarkus-kafka-client provides beside the Map of kafka properties.

So yes, a first step would be to leverage the Map produced by the extension to configure the kafka component which would also bring support for service binding out of the box.

Thinking a little bit more, I don't know if anything need to be changed on the camel-kafka component but in my mind the map retrieve from the Quarkus extension should be used to set-up the defaults but people should be able to override any of the provided configuration through i.e. endpoint options.