Provide option to show GitInfo in footer

[ottlinger]

Following

• https://www.brycewray.com/posts/2022/06/get-good-git-info-hugo/
• https://stackoverflow.com/questions/57141806/how-can-i-get-gitinfo-in-hugo#57152994
  it should be rather easy to integrate a gitInfo into the theme.

Personally I'd prefer a git hash that is shown if
--enableGitInfo is used or config.toml contains
enableGitInfo=true
similar to the link shown depending on the configuration option hidedesignbyline.

Any thoughts on that? (Before I start with a PR) :)

Thanks

[zjedi]

Sounds like a feature relevant mostly to tech savvy people, I think it should be opt-in. enableGitInfo=true with default value false sounds good to me. I don't have strong views on this, do it the way that fits you best :)

[ottlinger]

Thanks.