Document Camel Quarkus build items

It could be useful for newcomers to the project and potentially also for folks who want to write their own Camel component extensions, if we had a summary page of build items like [Quarkus](https://quarkus.io/guides/all-builditems).

Start by reviewing the Camel Quarkus build items and the Quarkus all-build-items guide linked in the issue. Identify the build items that should be included, then create a summary page that helps newcomers and extension authors find and understand them.

Written by the indexing model from the issue text.