test: add target verification tests for usv2, usv3

foundry/test/mock/MockUniswapV2Pool.sol

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: Unlicense
+pragma solidity ^0.8.26;
+
+// Mock for the UniswapV2Pool contract, it is expected to have malicious behavior
+contract MockUniswapV2Pool {
+    address public token0;
+    address public token1;
+
+    constructor(address _tokenA, address _tokenB) {
+        token0 = _tokenA < _tokenB ? _tokenA : _tokenB;
+        token1 = _tokenA < _tokenB ? _tokenB : _tokenA;
+    }
+}