feat: add load_git, to load Module from a git committish

[tlambert03]

Since you mentioned liking the module-from-git approach in griffediff. Here's a PR for your consideration that adds it here. This will create a temporary git worktree with a specific commit or tag checked out, then add it to the search_paths passed to the loader

from griffe.git import load_git

module = load_git('my_module', commit='v0.1.0', repo='path/to/repository')

leaving in draft for now, as i'm sure there's some stuff to discuss (and I haven't run all the checks yet).

[tlambert03]

Fixed up docstrings and checks... and created a better test fixture strategy.

Note, I had to noqa a bunch of subprocess warnings (S404,S603,S607) if that concerns you

[pawamoy]

Thanks, I didn't get the time to review yet, but soon 🙂

[pawamoy]

Review done! Mostly good, just one or two questions, and some nitpicks about file structure 🙂

[tlambert03]

all set

[pawamoy]

OK! Thanks a lot! This paves the way to great things 😎