Marimo notebook conversion

[keller-mark]

Fixes #459

TODO:

• Fix gene list bug React-virtualized AutoSizer not returning correct height in marimo notebook (shadow-DOM) context vitessce#2228
• Update formatting of converted code, especially where variables have been renamed due to duplicate naming. Line breaks seem to have been changed to one-liners. Perhaps autopep8 or another formatter can help with this.
• Update headings and cell orderings in marimo notebooks
• Script to convert .mo.py files to Jupyter notebooks
• Update README with marimo commands
• Add step to GitHub actions workflow that runs .ipynb conversion script and errors if there is any diff produced. Will need to check diff after uv run make html to account for language metadata added by the conf.py script