feat: biginteger implementation

[qalisander]

Resolves #481

PR Checklist

• Tests
• Documentation
• Changelog

[netlify]

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[codecov]

Codecov Report

Attention: Patch coverage is 55.08850% with 406 lines in your changes missing coverage. Please review.

Project coverage is 84.4%. Comparing base (e8b6c7d) to head (d3df6cc).

Files with missing lines	Patch %	Lines
lib/crypto/src/arithmetic/mod.rs	52.8%	294 Missing ⚠️
lib/crypto/src/field/fp.rs	65.1%	90 Missing ⚠️
lib/crypto/src/const_helpers.rs	0.0%	22 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
lib/crypto/src/field/mod.rs	100.0% <ø> (ø)
lib/crypto/src/field/prime.rs	0.0% <ø> (ø)
lib/crypto/src/poseidon2/mod.rs	93.2% <ø> (ø)
lib/crypto/src/const_helpers.rs	0.0% <0.0%> (ø)
lib/crypto/src/field/fp.rs	57.5% <65.1%> (+8.9%)	⬆️
lib/crypto/src/arithmetic/mod.rs	52.8% <52.8%> (ø)

[bidzyyys]

It's great you have done these benchmarks but I am not a fan of maintaining akr-ff or poseidon-renegades. We may want. to have just a separated branch with these benchmarks.

[qalisander]

I was about to drop it. It is just for comparison, when I was optimizing it