feature: Check for presence of a known ABI in bytecode

[shazow]

Given some known ABI, check if some subset of it exists in the bytecode.

Either as a helper, or a documented recipe.

[shazow]

High-level sketch:

import { whatsabi } from "@shazow/whatsabi";
import * as AbiFunction from 'ox/AbiFunction';

// Given some ABI definition
const abi = [
  "function afterSwap(address sender, address recipient, bool zeroForOne, uint256 amountSpecified, uint160 sqrtPriceLimitX96) external returns (bytes4);",
  // ...
];

// Use something like oxlib (or viem or ethers) to convert them to selectors
const abiSelectors = abi.map(sig => AbiFunction.getSelector(sig));

// Get the selectors from the bytecode
const selectors = whatsabi.selectorsFromBytecode(code);

// Compare
const matching = (new Set(selectors)).intersection(new Set(abiSelectors));

// Do we want to map them back to the original ABI? We'll need to make a lookup in abiSelector instead of just a list conversion