Set up scaffolding

[johndgiese]

• Add a REAMDE that explains what the tool is used for (should focus on user needs)
• Set up a GitHub action to run the automated tests
• Run flake8 as part of the GitHub action
• Add a little test badge to the README
• Set up repo in Pypi
• Automatically publish to pypi

See GitHub.com/innolitics/n2y for examples that do most of this. Also see our notion wiki page about pypi set up.