feat: pre-commit-python-hooks

[axiomofjoy]

Sets up pre-commit hook framework. Currently set up for formatting Python code, but in theory should work for the UI code as well.

This framework:

• is language-agnostic,
• has a large ecosystem of supported hooks,
• supports creation of custom hooks if necessary,
• looks like it will easily integrate with GitHub Actions, so we can run the same .pre-commit-config.yaml in the pipeline, can consolidate some of our actions and simplify our pipeline,
• has a lot of stars and contributors on its GitHub page,
• feels pretty simple to use, I got it running quickly.

[axiomofjoy]

Runs with tool-specific config defined in pyproject.toml.

[axiomofjoy]

Tried to incorporate eslint and prettier into the pre-commit framework, but did not get it to work. Looks like a known issue. Best solution I can see long-term is to use husky for the UI, pre-commit for the Python code and handle multiple pre-commit hooks using Make down the line. Punting for now. Would hold off on installing the Python pre-commit hooks for the time being if you use husky, as they will mess up your husky setup.