Make a docs site

[ryanhiebert]

This package is gaining some really helpful complexity, and having a documentation site for more detailed explanation that isn't appropriate in a README may soon be wise. Our README is already getting a bit unwieldy, so a separate docs site would allow us to slim that down to only a very basic example.

[tim-schilling]

I agree!

[tim-schilling]

Proposed docs set up:

• about / justification
• installation
• reference
• examples
  • add field
  • remove field
• suggested safe values for common db operations

I'm happy to source information from https://www.better-simple.com/django/2024/07/22/django-safemigrate/ where it makes sense.

[ryanhiebert]

I'd generally put reference last in the list, but yeah, those seems like good sections.