CI/CD for docs

Right now deploying the docs is manual - we should make this automated!

You can see my attempt to do this in the past [here](https://github.com/AlexsLemonade/refinebio-py/blob/master/.github/workflows/publish.yml).

I think we might be able to look at the workflow for [publishing refinebio-examples](https://github.com/AlexsLemonade/refinebio-py/blob/master/.github/workflows/publish.yml) to get a good idea on how to deploy the pyrefinebio docs.

Compare the past attempt in .github/workflows/publish.yml with the workflow for publishing refinebio-examples. Determine how the pyrefinebio documentation is currently deployed, then make that deployment run through CI/CD; done means the docs publish automatically rather than requiring a manual deployment.

Written by the indexing model from the issue text.