Move snapshots

[martincostello]

Move all snapshots to their own directory and rename some of the tests to shorten the file names to avoid MAX_PATH issues on Windows.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.56%. Comparing base (ecbb87f) to head (5d99438).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3314      +/-   ##
==========================================
- Coverage   84.86%   83.56%   -1.31%     
==========================================
  Files          77       77              
  Lines        3224     3224              
  Branches      559      559              
==========================================
- Hits         2736     2694      -42     
- Misses        488      530      +42     

Flag	Coverage Δ
Linux	83.56% <ø> (ø)
Windows	83.56% <ø> (+17.21%)	⬆️
macOS	83.56% <ø> (ø)

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