Spellcheck as part of CI

[chayim]

As part of extending CI and providing a better experience working with the repository and codebase itself, I'm starting by adding some scaffolding, spelling CI.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (93fa07e) 75.36% compared to head (99a084c) 75.38%.

❗ Current head 99a084c differs from pull request most recent head 13c93d9. Consider uploading reports for the commit 13c93d9 to get more accurate results

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Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3492      +/-   ##
============================================
+ Coverage     75.36%   75.38%   +0.01%     
- Complexity     4894     4895       +1     
============================================
  Files           297      297              
  Lines         14965    14965              
  Branches       1129     1129              
============================================
+ Hits          11279    11281       +2     
+ Misses         3190     3189       -1     
+ Partials        496      495       -1     

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