Recommendation is to avoid using the year nomenclature as this information is already encoded in the git repo. Avoids needing to repeatly update. Also updates AUTHORS.txt from current repo with contributor names
* Ensure the git backend is deleted when the project tree is deleted. * Unload the git repo for a project when the project is unloaded from the tree.
Adds support for project-based git integration, branch support, commit, revert and updates Fixes https://gitlab.com/kicad/code/kicad/issues/10441
