Facelift

[vy]

This facelift operation introduces the following changes

• Bumps the logging-parent version to 10.0.0 and takes advantage of its all pom.xml (revision flattening, Spotless integration, Spotbugs integration, etc.) and CI goodies (i.e., reusable workflows)
• Revamps src/changelog
• Matches boilerplate manuscripts (README.adoc, RELEASE-NOTES.md, NOTICE.txt, etc.) with other repositories
• Refactors pom.xmls
• Removes src/site in favor of simple doc/manual.adoc (ala log4j-transform)
• Updates some dependencies

TODO (before merging)

• [x] Fix Error Prone and/or Spotbugs failures

TODO (after merging)

1. [ ] make a release
2. [ ] add redirects from logging-log4j-site to this repo

[rocketraman]

@vy As mentioned on Slack, all the spotbugs errors are false positives, as far as I can tell.

[vy]

@vy As mentioned on Slack, all the spotbugs errors are false positives, as far as I can tell.

Fixed in 22ef2028c4c80e1e953516799266a44aa2fd11c5 and d80405a4883b6276767365ddbb2dcb2f4b4e87f3.

[vy]

@rocketraman, thanks so much for the review. And of course I am not gonna merge a PR without green CI checks, in particular, when the PR of subject is supposedly improving the CI. :sweat_smile:

@jvz, we are waiting for your blessing. :innocent:

For the record, I have fixed all ./mvnw clean verify failures and now CI checks pass.