Update EIP-2537: Gas pricing MAP, MUL and ADD operations

[MarekM25]

Nethermind proposal of MUL and ADD operations. The speed of this precompile measured on Intel NUC 11 Intel Core i7-1165G7 and Nethermind client (EcRecover ~80 mgas/s). Full proposal: https://github.com/Marchhill/bls-precompile-benchmarks/blob/main/proposed-changes.md

g1add-1: 86.61 mgas/s (83.42-90.05)
g1mul-1: 86.90 mgas/s (83.24-90.89)
g2add-1: 82.34 mgas/s (78.50-86.58)
g2mul-1: 93.40 mgas/s (88.11-99.38)
mapfp-1: 89.96 mgas/s (85.91-94.40)

ATTENTION: ERC-RELATED PULL REQUESTS NOW OCCUR IN ETHEREUM/ERCS

--

When opening a pull request to submit a new EIP, please use the suggested template: https://github.com/ethereum/EIPs/blob/master/eip-template.md

We have a GitHub bot that automatically merges some PRs. It will merge yours immediately if certain criteria are met:

• The PR edits only existing draft PRs.
• The build passes.
• Your GitHub username or email address is listed in the 'author' header of all affected PRs, inside .
• If matching on email address, the email address is the one publicly listed on your GitHub profile.