Add a project.git_default_branch option

[no92]

This allows for specifying the repository base URL separately from the branch/commit/tag part, which fixes the Repository link in the sidebar while preserving the functionality of the links to declarations, all while being more user-friendly IMO.

The configuration in .hdoc.toml would look like this:

git_repo_url = "https://github.com/hdoc/hdoc/"
git_default_branch = "master"

[hdoc]

Thank you. If I recall correctly the "Repository" link used to work even with the blob/main appended to the end of that URL but that seems to have broken in the meantime. In any case, this is an elegant solution for that problem. Thank you for updating the docs as well.

We already have your CAA on file so we will be merging this in to the next release. Your contribution is greatly appreciated.

[hdoc]

Hello @no92, your PR was merged as part of hdoc 1.4.0 which we just released. We have credited you in the release notes, which can be found here: https://hdoc.io/release-notes/#version-1-4-0-24-october-2022. Thank you for your help and for the high quality PR.