refactor: some cleaning & fix rotated iou distance

[Smirkey]

No description provided.

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (1c86706) 98.87% compared to head (c116d3c) 98.64%.

Files	Patch %	Lines
powerboxesrs/src/rotation.rs	94.28%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #34      +/-   ##
==========================================
- Coverage   98.87%   98.64%   -0.23%     
==========================================
  Files          15       15              
  Lines        2303     2364      +61     
==========================================
+ Hits         2277     2332      +55     
- Misses         26       32       +6     

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[codspeed-hq]

CodSpeed Performance Report

Merging #34 will degrade performances by 94.06%

_{Comparing improvements (c116d3c) with main (1c86706)}

Summary

❌ 1 regressions
✅ 144 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	improvements	Change
❌	test_rotated_iou_distance[float64]	6.9 ms	116.1 ms	-94.06%