(Optional) Set up GitHub Actions for automated testing and linting

[AdrianDAlessandro]

Take inspiration from the poetry template ci.yml to configure GitHub Actions to run tests and pre-commit hooks when new changes are pushed to the repo.

This is really handy because you can see if the tests have passed in GitHub (and so can everybody else that looks at the repo).

This will require a few more changes to the linked file since that assumes that the tool poetry is used for dependency management and virtual environment creation.

[emilymuller1991]

have added github actions - need to pass tests

[emilymuller1991]

have passed one tests. Need to discuss additional tests for data