refactor: use rtree in rotated box iou

[Smirkey]

Use rtree to avoid expensive iou computation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e500cba) 98.64% compared to head (287a571) 98.67%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
+ Coverage   98.64%   98.67%   +0.03%     
==========================================
  Files          15       15              
  Lines        2364     2418      +54     
==========================================
+ Hits         2332     2386      +54     
  Misses         32       32              

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[codspeed-hq]

CodSpeed Performance Report

Merging #36 will improve performances by 50.95%

_{Comparing speedup/rotated_iou (287a571) with main (e500cba)}

Summary

⚡ 1 improvements
✅ 144 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	speedup/rotated_iou	Change
⚡	test_rotated_iou_distance[float64]	116.2 ms	77 ms	+50.95%