refactor: generate types with double-extension support.

[knightedcodemonkey]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 92.53731% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.22%. Comparing base (54bdf89) to head (1ab9313).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/css/src/generateTypes.ts	92.53%	9 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
- Coverage   92.87%   92.22%   -0.65%     
==========================================
  Files          11       11              
  Lines        2836     2728     -108     
  Branches      488      476      -12     
==========================================
- Hits         2634     2516     -118     
- Misses        188      194       +6     
- Partials       14       18       +4     

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