add pre-commit hook to repo

https://pre-commit.com/#creating-new-hooks

I think we just need to create a `.pre-commit-hooks.yaml` file that mirrors something like [`black`](https://github.com/psf/black/blob/main/.pre-commit-hooks.yaml).

Read the pre-commit hook creation guide and compare the linked Black example. Create the repository's .pre-commit-hooks.yaml file with the corresponding hook metadata, then verify that pre-commit recognizes the repository hooks; completion means the file mirrors the intended configuration.

Written by the indexing model from the issue text.