EIP-2537 BLS12 381 Precompiles

Documentation for tests/prague/[email protected].

Generate fixtures for these test cases for Osaka with:

fill -v tests/prague/eip2537_bls_12_381_precompiles --fork Osaka

Tests EIP-2537: Precompile for BLS12-381 curve operations

Tests for EIP-2537: Precompile for BLS12-381 curve operations.