Publicly display API documentation

We have a few forms of API documentation -- one is generated statically via makedocs, and the other is dynamically generated via a swagger page.

Both of these should be rendered via some kind of path from the API itself. This will make it easier to know what is deployed, but it will also help us be able to demonstrate / talk about what we've built.

• Build the documentation as part of CI / CD
• Update the code base to serve both forms of documentation alongside the other API endpoints.