Add a development page to docs

[kklein]

Checklist

• [ ] Added a CHANGELOG.rst entry

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.66%. Comparing base (3c5a3a4) to head (e40b3fc). Report is 52 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #28 +/- ## ======================================= Coverage 94.66% 94.66% ======================================= Files 14 14 Lines 1294 1294 ======================================= Hits 1225 1225 Misses 69 69 ```

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