Sphinx API documentation framework

[dreamer2368]

API reference webpage is automatically built using Sphinx. References used for this PR are:

• An idiot’s guide to Python documentation with Sphinx and ReadTheDocs
• Sphinx AutoAPI tutorial
• Appendix: Deploying a Sphinx project online

API website workflow is:

• The website will be built (not deployed) for every commit of a PR to main branch. This will check if all the comments in the source directory are written in a proper way.
• Upon the PR's merging into main branch, the website will be deployed public to software.llnl.gov/GPLaSDI/

For documenting style, we will follow the numpy style:
https://www.sphinx-doc.org/en/master/usage/extensions/example_numpy.html

src/lasdi/timing.py shows the example comment according to the numpy style, which is parsed into the API webpage for timing.py.

[CBonneville45]

API Doc looks great!
Minor note: On the Sphinx API page, I'd suggest adding our LaSDI review paper among the references (https://arxiv.org/abs/2403.10748). Since it's essentially a unified summary of all (currently existing) LaSDI building blocks (as of March 2024), it would be a helpful ressource for prospective users of the library

[dreamer2368]

API Doc looks great! Minor note: On the Sphinx API page, I'd suggest adding our LaSDI review paper among the references (https://arxiv.org/abs/2403.10748). Since it's essentially a unified summary of all (currently existing) LaSDI building blocks (as of March 2024), it would be a helpful ressource for prospective users of the library

This is added now.

[punkduckable]

Everything looks good to me.