Setup GitHub Actions

[trevorb1]

Implementing CI through GitHub actions is a simple way to to test our utility functions. Implementing GitHub's Python starter workflow should be fine for now I think.

A successful PR will include:

• A workflow that:
  • Lints with Black
  • Check typing with mypy
  • Runs tests with PyTest
  • Build package with Python 3.8-3.11 across Windows, Mac, Linux.
• Bonus: Auto update a code coverage badge on the readme

Depending on how this goes, dropping the Windows requirement might be needed, since most (if not all) of us run Linux/UNIX. But lets discuss if that becomes an issue.