Jmafoster1/docs revamp

[jmafoster1]

This PR revamps the documentation and tutorial material to accompany the new improved workflow.

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
⚠️ PYTHON	black	30		1	1.25s
✅ PYTHON	pylint	30		0	6.48s

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.54%. Comparing base (e753b1e) to head (fa4cb8e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #404   +/-   ##
=======================================
  Coverage   98.54%   98.54%           
=======================================
  Files          25       25           
  Lines        1514     1514           
=======================================
  Hits         1492     1492           
  Misses         22       22           

Files with missing lines	Coverage Δ
causal_testing/discovery/nsga_discovery.py	100.00% <ø> (ø)
...esting/estimation/abstract_regression_estimator.py	100.00% <ø> (ø)
causal_testing/testing/causal_test_case.py	100.00% <ø> (ø)

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