Implement EIP-2537 using gnark-crypto

[garyschulte]

Implement eip-2537 using gnark-crypto.

related to #165 related to #91

• implements EIP-2537 using gnark-crypto, including as-spec'd subgroup checks and is-on-curve checks.
• implements EIP-196 using gnark-crypto, adds test cases
• adds test cases for EIP-196 to matter-labs implementation
• shims gnark-crypto implementation to be a drop-in replacement for matter-labs

Motivation

The primary motivation is to get besu onto a supported library for the ECC precompiles since the matter-labs eip-1962 repo appears to be unmaintained. There is additional benefit in that gnark-crypto performs better than matter labs on every precompile benchmark.

Testing on both x86_64 and ARM64 indicate this implementation compares very favorably with the matter-labs eip-1962 implementation for all operations.

[garyschulte]

If gnark is the library of choice, should we make a plan to remove matterlabs from this repo?

Once we have a besu release with gnark-crypto, we can remove matter labs and the original altbn128 implementation 👍