Feature/int api

[NailxSharipov]

Summary

Added a new template-based solver for i16, i32, and i64

Changes

Testing

• cargo test
• cargo fmt
• cargo clippy

Checklist

• Added tests for new behavior or bug fixes
• Updated docs/examples if needed

[codecov]

Codecov Report

❌ Patch coverage is 77.07809% with 182 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
iOverlay/src/core/edge_overlay.rs	48.97%	25 Missing ⚠️
iOverlay/src/vector/extract.rs	61.22%	19 Missing ⚠️
iOverlay/src/mesh/outline/offset.rs	57.50%	17 Missing ⚠️
iOverlay/src/mesh/stroke/offset.rs	58.33%	15 Missing ⚠️
iOverlay/src/float/slice.rs	47.36%	10 Missing ⚠️
iOverlay/src/string/clip.rs	30.76%	9 Missing ⚠️
iOverlay/src/float/scale.rs	80.00%	8 Missing ⚠️
iOverlay/src/string/overlay.rs	61.90%	8 Missing ⚠️
iOverlay/src/float/clip.rs	60.00%	6 Missing ⚠️
iOverlay/src/float/overlay.rs	71.42%	6 Missing ⚠️
... and 23 more

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