First Pass Documentation (docstrings) For Top Level Pyrenew Files

[AFg6K7h4fhy2]

This pull request includes a first pass for:

• Correction and or modifications of existing docstrings in files contained in ./model/src/pyrenew/
• Addition of new docstrings in files contained in ./model/src/pyrenew/

Other relevant PRs: (closed: #73 , #74 , #76; open: #87 , #86 )

[codecov]

Codecov Report

Attention: Patch coverage is 91.30435% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 90.57%. Comparing base (437016d) to head (03d68c5).

Files	Patch %	Lines
model/src/pyrenew/convolve.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #89      +/-   ##
==========================================
+ Coverage   90.49%   90.57%   +0.08%     
==========================================
  Files          28       28              
  Lines         547      552       +5     
==========================================
+ Hits          495      500       +5     
  Misses         52       52              

Flag	Coverage Δ
unittests	90.57% <91.30%> (+0.08%)	⬆️

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[gvegayon]

Minor comments

[gvegayon]

All good, thanks!