feat(lib): better batch_size default, new arguments

[jeertmans]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 90.62500% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.12%. Comparing base (ed863cf) to head (2d16a33).
⚠️ Report is 36 commits behind head on main.

Files with missing lines	Patch %	Lines
differt/src/differt/rt/_utils.py	96.66%	2 Missing ⚠️
differt/src/differt/em/_material.py	0.00%	1 Missing ⚠️
differt/src/differt/geometry/_paths.py	0.00%	1 Missing ⚠️
differt/src/differt/geometry/_triangle_mesh.py	0.00%	1 Missing ⚠️
differt/src/differt/scene/_triangle_scene.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #310      +/-   ##
==========================================
+ Coverage   83.49%   84.12%   +0.62%     
==========================================
  Files          32       32              
  Lines        3017     3023       +6     
==========================================
+ Hits         2519     2543      +24     
+ Misses        498      480      -18     

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[codspeed-hq]

CodSpeed Performance Report

Merging #310 will degrade performances by 51.14%

_{Comparing batch_size (2d16a33) with main (ed863cf)}

Summary

⚡ 2 improvements
❌ 2 regressions
✅ 4 untouched

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

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	test_compute_paths[hybrid]	5.8 s	12 s	-51.14%
⚡	test_first_triangles_hit_by_rays	5.9 s	4 s	+46.56%
⚡	test_rays_intersect_any_triangle	4.3 s	3.2 s	+33.08%
❌	test_transmitter_visibility	965.6 ms	1,969 ms	-50.96%