feat(docs): add autobuild and serving for docs

[JacobCoffee]

Description

• Adds sphinx-autobuild to build and serve the documentation
  • This will also watch docs/ and auto-rebuild anytime there is a content change
• Adds a top level Makefile with targets to install docs deps and serve the docs via make docs-serve

Preview

psf-salt on  #364 [📝++(1)🤷] via  pyenv via ⍱ v2.4.1 
󰂃 7% ✗make docs-serve
=> Cleaning documentation build assets
=> Removed existing documentation build assets
=> Installing documentation dependencies
Audited 5 packages in 24ms
=> Installed documentation dependencies
=> Serving documentation
[sphinx-autobuild] Starting initial build
[sphinx-autobuild] > sphinx-build docs/ docs/_build/ -j auto
Running Sphinx v7.3.7
myst v3.0.1: MdParserConfig(commonmark_only=False, gfm_only=False, enable_extensions=set(), disable_syntax=[], all_links_external=False, links_external_new_tab=False, url_schemes=('http', 'https', 'mailto', 'ftp'), ref_domains=None, fence_as_directive=set(), number_code_blocks=[], title_to_header=False, heading_anchors=0, heading_slug_func=None, html_meta={}, footnote_transition=True, words_per_minute=200, substitutions={}, linkify_fuzzy_links=True, dmath_allow_labels=True, dmath_allow_space=True, dmath_allow_digits=True, dmath_double_inline=False, update_mathjax=True, mathjax_classes='tex2jax_process|mathjax_process|math|output_area', enable_checkboxes=False, suppress_warnings=[], highlight_code_blocks=True)
building [mo]: targets for 0 po files that are out of date
writing output... 
building [html]: targets for 16 source files that are out of date
updating environment: [new config] 16 added, 0 changed, 0 removed
reading sources... [100%] ssl
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
copying assets... copying static files... done
copying extra files... done
done
writing output... [100%] ssl
generating indices... genindex done
writing additional pages... search done
dumping search index in English (code: en)... done
dumping object inventory... done
build succeeded.

The HTML pages are in docs/_build.
[sphinx-autobuild] Serving on http://127.0.0.1:8000
[sphinx-autobuild] Waiting to detect changes...

Closes

• Closes Docs: Make previewing in development easier  #364

[ewdurbin]

I like this. Thoughts on running it via docker so we don't have to do local installation?

[JacobCoffee]

@ewdurbin that sounds okay with me. I've not done it this way before but ill take a jab at it