Add CI for spell

[jkroepke]

What this PR does / why we need it

Which issue this PR fixes

(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

• fixes #

Special notes for your reviewer

Particularly user-facing changes

Checklist

Complete these before marking the PR as ready to review:

• DCO signed
• The PR title has a summary of the changes
• The PR body has a summary to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.37%. Comparing base (0867c85) to head (d801364).

❗ Current head d801364 differs from pull request most recent head baeb4cc

Please upload reports for the commit baeb4cc to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #275   +/-   ##
=======================================
  Coverage   85.37%   85.37%           
=======================================
  Files          47       47           
  Lines        2167     2167           
=======================================
  Hits         1850     1850           
  Misses        208      208           
  Partials      109      109           

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