[feature/pre-commit] Adding pre-commit checks for local and GitHub actions

[jamesETsmith]

General

Adding code checking now before the code base really starts to grow.

How to Use

Local

# From root project dir
pre-commit install # installs the checks as pre-commit hooks

GitHub Actions

These changes will run automatically on GitHub actions in the new workflow .github/workflows/pre-commit.yml. This will run the checks on all files. If this project gets use, this will be wasteful, but for now it's safe and easy to run the checks more often than we technically need.