Set up Hatch as a project manager

Consider setting up a project manager for this project. [Hatch](https://hatch.pypa.io/latest/) is one that I have the most up-to-date experience with. You can also consider other such as https://python-poetry.org/.

Features of Hatch are listed in https://hatch.pypa.io/latest/. You can see the argument for why using it at https://hatch.pypa.io/latest/why/. I particularly like its [env management features](https://hatch.pypa.io/latest/why/#environment-management).

No file, test, or entry point is named. Start with the Hatch and Poetry links in the issue, then inspect the repository's current project setup; done means selecting a project manager and documenting or adding its configuration consistently.

Written by the indexing model from the issue text.