Docs: Create starter sphinx docs for pyosMeta package

[lwasser]

I think it's time to create docs for this package. we should use the pydata_sphinx_theme given we've used this elsewhere.

This issue is to just create the start of initial sphinx documentation structure that we can publish online.

The structure of our docs should have

• a developing / contributing section
• an about section.
• api docs

We can start with a blank set of docs and slowly build them out pulling content from our readme file and the development docs when created in #180