Provide script run during subproject release process that updates antora.yml and source-map.yml

[djencks]

camel-quarkus has tooling/scripts/update-antora-yaml.groovy which despite its uninformative name now updates the version and related info in antora.yml and the branch in source-map.yml during the release process.

We should add this to all the subprojects, it will considerably simplify the release process. It might need to be rewritten in go for camel-k.

This will also involve updating https://camel.apache.org/manual/release-guide-website.html.