Develop per-repository pre-commit git hooks for formatting checks

[CodeGat]

In the linked issue, it was noted that pre-commit hooks can play a role in addition to CI checks, with pre-commit hooks potentially modifying the codebase and CI checks verifying (but not modifying) the changes in a pull request.
We can create pre-commit config on a per-repository basis with something like https://pre-commit.com/ .

This issue serves as a kind of overarching issue for all the PRs that will probably come of this.

References #71