feat: add foundry deployment script

scripts/state/Deploy.s.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import {Script, console2} from "forge-std/Script.sol";
+import {IOverlayV1Factory} from "@overlay-protocol/v1-core/contracts/interfaces/IOverlayV1Factory.sol";
+import {OverlayV1State} from "contracts/OverlayV1State.sol";
+
+// 1. Set required environment variables: ETHERSCAN_API_KEY, DEPLOYER_PK, RPC.
+// 2. Run with:
+// $ source .env
+// $ forge script scripts/state/Deploy.s.sol:DeployScript --rpc-url $RPC --verify -vvvv --broadcast
+
+contract DeployScript is Script {
+    // TODO: update values as needed
+    address constant FACTORY = 0x8cCD181113c7Ae40f31D5e8178a98A1A60B55c4C;
+
+    function run() external {
+        uint256 DEPLOYER_PK = vm.envUint("DEPLOYER_PK");
+
+        vm.startBroadcast(DEPLOYER_PK);
+
+        // <!---- START DEPLOYMENT ---->
+
+        OverlayV1State state = new OverlayV1State(IOverlayV1Factory(FACTORY));
+
+        // <!-- END DEPLOYMENT -->
+
+        vm.stopBroadcast();
+
+        console2.log("OverlayV1State deployed at:", address(state));
+    }
+}