Feature/edge experiment

[NailxSharipov]

• Added uniform Delaunay triangulation.
• Added mesh relaxation.

[codecov]

Codecov Report

❌ Patch coverage is 82.42991% with 94 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
iTriangle/src/advanced/relax.rs	78.60%	46 Missing ⚠️
iTriangle/src/int/constraint.rs	87.94%	17 Missing ⚠️
iTriangle/src/int/triangulatable.rs	33.33%	8 Missing ⚠️
iTriangle/src/tessellation/uniform.rs	92.45%	8 Missing ⚠️
iTriangle/src/float/uniform.rs	62.50%	6 Missing ⚠️
iTriangle/src/int/uniform.rs	73.91%	6 Missing ⚠️
iTriangle/src/float/relax.rs	82.35%	3 Missing ⚠️

📢 Thoughts on this report? Let us know!