Auto-update docs when working on documentation

[kallewesterling]

Summary

Up until now, when rendering documentation, you have had to re-run the make html command every time. This makes it easier.

Fixes #456

Describe your changes

• Adding in sphinx liveupdate
• Creating make script
• Adding developer documentation about this

Reviewer checklist

Please add anything you want reviewers to specifically focus/comment on.

• Everything looks ok?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.83%. Comparing base (ef8067d) to head (087365b).
Report is 10 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #457   +/-   ##
=======================================
  Coverage   62.83%   62.83%           
=======================================
  Files          41       41           
  Lines        6757     6757           
=======================================
  Hits         4246     4246           
  Misses       2511     2511           

Flag	Coverage Δ
unittests	62.83% <ø> (ø)

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[rwood-97]

Looks good, I added a note about navigating to http://127.0.0.1:8000 if the new tab doesn't open (it didn't for me).

[kallewesterling]

Thank you @rwood-97 -- otherwise looks good to merge?