Generate Sphinx docs

[maedoc]

Setting up Sphinx documentation would be better long run than a pile of notebooks. We can get started with just running autodocs.

[Ziaeemehr]

adding sample documents into the example script,
like this : https://github.com/Ziaeemehr/JITCSIM/blob/master/jitcsim/examples/scripts/examples_kuramoto/00_ode_kuramoto_II.py

[Ziaeemehr]

• add hyperlink to the functions in documentation
• add [source] also to show the source code inline.

[Ziaeemehr]

the issue for page is that github look into ./docs for index.html

• One solution is to make html file and then manually move the content of build directory into docs. Messy but works.
• The other solution is adding .github/workflows/gh_pages.yml but needs to be edited.

[Ziaeemehr]

https://ins-amu.github.io/vbjax/

[Ziaeemehr]

I used this as a pattern for documentation.
I am still have issue to make github run makefile to produce html files (unless I upload html file which doesn't seems neat solution).

[Ziaeemehr]

@maedoc to generate page from readthedocs just need to have "required permission" to the repo, sign up for an account, and import the repository. The yml file is already in the repo.

[Ziaeemehr]

seems working:
https://vbjax.readthedocs.io/en/latest/#

with some error on the dashboard:
Webhook activation failed. Make sure you have the necessary permissions.