Point to commits of repositories that go into the website

[davsclaus]

When we build the website we pull in files from several git repositories and several branches within them. The result of the website build is pushed to the asf-site branch on the camel-website repository and it is now squashed to conserve storage space in git. The commit message in the asf-site branch points to the commit on main branch of the camel-website repository that was the source of the build.

It would be useful to have that commit message point to all of the repositories (branches?) that contributed to the website at that point.

[davsclaus]

Ported over from ASF JIRA: https://issues.apache.org/jira/browse/CAMEL-15816

[djencks]

Right now this would only be visible for the last 9 or so builds. If we adopted #733 there would be no cost to us (maybe to infra, but not us) in keeping full published history).

However, it might be even more useful to show the repo and commit in the footer of each page. Of course for things like the spring-boot info for components, which is from a different repo than the component info, that's a bit difficult.