New if_switch_linter

[MichaelChirico]

Part of #884

No hits on {lintr}

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ff1dc21) 99.38% compared to head (b0652e0) 99.39%.

❗ Current head b0652e0 differs from pull request most recent head 4ec39b4. Consider uploading reports for the commit 4ec39b4 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2304   +/-   ##
=======================================
  Coverage   99.38%   99.39%           
=======================================
  Files         119      120    +1     
  Lines        5392     5418   +26     
=======================================
+ Hits         5359     5385   +26     
  Misses         33       33           

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[AshesITR]

Missing metadata and vectorization tests.