* Move cofactor clearing to dedicated per-curve subgroups file
* Add BLS12-381 fast subgroup checks
* Implement fast cofactor clearing for BN254_snarks
* Add fast subgroup check to BN254Snarks
* add BLS12_377 optimized cofactor and subgroup functions
* Add BN254_Nogami
* Add GT-subgroup tests
* Use the new subgroup checks for Eth1 EVM precompiles