Prepare repo for packaging

[geohci]

We'll want to make this library available via pip probably once Issue #4 is resolved. This will require some additional documentation and be a good time to improve some of our testing, framework, etc.

A few resources:

• https://docs.github.com/en/code-security/supply-chain-security/understanding-your-software-supply-chain/about-the-dependency-graph
• Perhaps some of the libraries being used here: https://github.com/mediawiki-utilities/mwsql