Add Multisig Batch utility for forge scripts

.gitmodules

@@ -6,3 +6,6 @@
 	path = lib/openzeppelin-contracts-upgradeable
 	url = https://github.com/openzeppelin/openzeppelin-contracts-upgradeable
 	branch = release-v5.3
+[submodule "lib/safe-utils"]
+	path = lib/safe-utils
+	url = https://github.com/Recon-Fuzz/safe-utils

foundry.toml

@@ -18,6 +18,9 @@ block_timestamp = 1_689_934_508
 # Ignore base test files to avoid running tests twice
 no_match_path = "./test/base/*.t.sol"
 
+[lint]
+lint_on_build = false
+
 [profile.default.fuzz]
 runs = 256
 

script/MultiSigBatchBase.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: UNLICENSED
+
+pragma solidity >=0.8.20 <0.9.0;
+
+import { Safe } from "../lib/safe-utils/src/Safe.sol";
+import { Script } from "../lib/forge-std/src/Script.sol";
+
+abstract contract MultiSigBatchBase is Script {
+    using Safe for *;
+
+    Safe.Client internal _safeMultiSig;
+    address[] internal _targets;
+    bytes[] internal _data;
+
+    function _addToBatch(address target_, bytes memory data_) internal {
+        _targets.push(target_);
+        _data.push(data_);
+    }
+
+    function _proposeBatch(address safe_, address sender) internal {
+        _safeMultiSig.initialize(safe_);
+        _safeMultiSig.proposeTransactions(_targets, _data, sender, "");
+    }
+
+    function _simulateBatch(address safe_) internal {
+        vm.startPrank(safe_);
+
+        for (uint256 i = 0; i < _targets.length; i++) {
+            (bool success, ) = _targets[i].call(_data[i]);
+            require(success, "Simulation failed");
+        }
+
+        vm.stopPrank();
+    }
+}