ReadTheDocs: Create a .readthedocs.yaml configuration file

[buhtz]

ReadTheDocs informed us that they need a .readthedocs.yaml file in each repository. The deadline is at 25th September 2023.

This is also related to our separate user-documentation repository.

It might be easy to achieve and I still have done this for my repos on Codeberg.org (but they are using pydoctor instead of sphinx).

[buhtz]

This is the original BIT dev-docu. There is layout problem in the sidebar and also in the footer (not shown here). The text do overflow into the content area.

I don't know the reason. I just switch to the Sphinx-ReadTheDocs theme which looks a bit like the old Python 2 docu.
Here is a testing-version of the new BIT docu with "Sphinx-RTD" theme.

I will prepare a PR with the yaml-file soon.

[aryoda]

I just switch to the Sphinx-ReadTheDocs theme which looks a bit like the old Python 2 docu.
https://bit-testing-readthedocs.readthedocs.io/

Good decision, your testing version does work with my Firefox and looks very nice IMHO!