Generate docs for branches other than main

[pgimenes]

Currently we only generate docs for the main branch, published to https://deepwok.github.io/mase/

It would be useful to be able to access the generated doc for other branches, such as:

• https://deepwok.github.io/mase/main/...
• https://deepwok.github.io/mase/latest/...
• https://deepwok.github.io/mase/v1.0/...
• https://deepwok.github.io/mase/v2.0/...

This would enable share doc drafts as they're written in development branches

[pgimenes]

@Aaron-Zhao123 would this be easy to implement?

[pgimenes]

https://holzhaus.github.io/sphinx-multiversion/master/index.html

[Aaron-Zhao123]

The easist (at least what I do) is to run the doc building locally if I am on a dev branch?

cd docs
make html
open ./build/html/index.html

You should then be able to see the doc on your browser.