Basic simulator tutorial

[mjyb16]

Please read the new tutorial in the docs (I also moved the Menagerie down)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.16%. Comparing base (abc9518) to head (958c538).
Report is 25 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #313   +/-   ##
=======================================
  Coverage   92.16%   92.16%           
=======================================
  Files          55       55           
  Lines        2399     2399           
=======================================
  Hits         2211     2211           
  Misses        188      188           

Flag	Coverage Δ
unittests	92.16% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[ConnorStoneAstro]

Awesome tutorial! We really needed something like this. I've added a few minor comments that should be quick to go through.

[ConnorStoneAstro]

Looks great! I've approved since it's ready to go, but there is one minor change you could make first which is just to use the caskade argument filling for psf so that you dont need self.psf.value in your forward method.