[docs] API: use in marimo

Thanks for the great library, and for supporting [marimo](https://github.com/marimo-team/marimo) (https://github.com/Kanaries/pygwalker/issues/638).

The API for marimo is missing from https://docs.kanaries.net/pygwalker/.

I realized this after someone shared Pygwalker on socials, but said they're not using it because they're using marimo — suggesting they didn't know that Pygwalker already supports marimo.

Would it be possible to add an API docs page for marimo?