Catalyst Python template repo

[zaneselvans]

We've got good CI on a few repos, but they're all kind of different. Create a single one with all the good stuff in one place, so we can make setup easy.

• Import module in top level __init__.py #6
• Show logs during pytest run #4
• Add a CLI module and test #5
• Automate RTD builds #7
• Look into setting up mypy type checking #13
• Add new repo setup instructions to README #10
• Tag and release template repo #15

[zaneselvans]

It is done: https://pypi.org/project/catalystcoop.cheshire/