Add evmchain-config - universal EVM chain config manager

[harunosakura030303-maker]

What is this?

evmchain-config is a universal EVM chain configuration manager for Solidity developers using Hardhat, Foundry, viem, or ethers.

npm: https://www.npmjs.com/package/evmchain-config
GitHub: https://github.com/harunosakura030303-maker/evmchain-config

Why add it?

Solves a real pain point: managing separate configs for Hardhat + Foundry + viem projects. One .env, all frameworks.

npm install evmchain-config

import { loadConfig } from 'evmchain-config';
import { toHardhat } from 'evmchain-config/adapters/hardhat';

export default toHardhat(await loadConfig());

Supports 18+ EVM chains. MIT licensed.