add AddLinkTokenToSepoliaSender script for linking LINK token to SepoliaSender contract

Author: cqlyj

script/AddLinkTokenToSepoliaSender.s.sol

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.26;
+
+import {Script, console} from "forge-std/Script.sol";
+import {DevOpsTools} from "lib/foundry-devops/src/DevOpsTools.sol";
+import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
+
+contract AddLinkTokenToSepoliaSender is Script {
+    using SafeERC20 for IERC20;
+
+    uint256 constant AMOUNT = 3e18; // 3 LINK
+    address constant SEPOLIA_LINK_ADDRESS =
+        0x779877A7B0D9E8603169DdbD7836e478b4624789;
+
+    function addLinkTokenToSepoliaSender(address mostRecentlyDeployed) public {
+        vm.startBroadcast();
+        IERC20(SEPOLIA_LINK_ADDRESS).approve(mostRecentlyDeployed, AMOUNT);
+        IERC20(SEPOLIA_LINK_ADDRESS).safeTransfer(mostRecentlyDeployed, AMOUNT);
+        vm.stopBroadcast();
+
+        console.log("Link token added to SepoliaSender.");
+    }
+
+    function run() public {
+        address mostRecentlyDeployed = DevOpsTools.get_most_recent_deployment(
+            "SepoliaSender",
+            block.chainid
+        );
+        console.log("Most recently deployed address: ", mostRecentlyDeployed);
+
+        addLinkTokenToSepoliaSender(mostRecentlyDeployed);
+    }
+}