Initial commit: add .gitignore and README

contracts/examples/ProtocolinkExecutor.sol

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "../interfaces/IERC20.sol";
+
+interface IProtocolinkRouter {
+    function execute(
+        bytes calldata data
+    ) external payable;
+}
+
+/**
+ * @title ProtocolinkExecutor
+ * @notice Example contract for executing Protocolink routes
+ * @dev This contract can execute Protocolink transaction plans
+ */
+contract ProtocolinkExecutor {
+    IProtocolinkRouter public immutable router;
+
+    constructor(address router_) {
+        router = IProtocolinkRouter(router_);
+    }
+
+    /**
+     * @notice Execute a Protocolink route
+     * @param data The encoded Protocolink route data
+     */
+    function executeRoute(bytes calldata data) external payable {
+        router.execute{value: msg.value}(data);
+    }
+
+    /**
+     * @notice Execute a Protocolink route with token approvals
+     * @param tokens The tokens to approve
+     * @param amounts The amounts to approve
+     * @param data The encoded Protocolink route data
+     */
+    function executeRouteWithApprovals(
+        address[] calldata tokens,
+        uint256[] calldata amounts,
+        bytes calldata data
+    ) external payable {
+        // Approve tokens
+        for (uint256 i = 0; i < tokens.length; i++) {
+            IERC20(tokens[i]).approve(address(router), amounts[i]);
+        }
+
+        // Execute route
+        router.execute{value: msg.value}(data);
+    }
+}
+