feat: Uniswap X deployment script

--- don't change below this line ---
ENG-4675 Took 23 minutes

foundry/scripts/README.md

@@ -66,4 +66,22 @@ For each of the following, you must select one of `tenderly_ethereum`, `tenderly
 2. The scripts deploy-executors, remove-executor, set-roles and revoke-role all support this.
     1. If `SAFE_ADDRESS` is set, then it will propose a transaction to the safe wallet and later on it needs to be
        approved in their UI to execute on chain.
-    2. If it's not set, it will submit the transaction directly to the chain. 
+    2. If it's not set, it will submit the transaction directly to the chain.
+
+## Deploy Uniswap X filler
+
+The current script deploys an Uniswap X filler and verifies it in the corresponding blockchain explorer.
+
+Make sure to run `unset HISTFILE` in your terminal before setting the private key. This will prevent the private key
+from being stored in the shell history.
+
+1. Set the following environment variables:
+
+```
+export RPC_URL=<chain-rpc-url>
+export PRIVATE_KEY=<deploy-wallet-private-key>
+export BLOCKCHAIN_EXPLORER_API_KEY=<blockchain-explorer-api-key>
+```
+
+2. Confirm that the variables `tychoRouter`, `uniswapXReactor` and `nativeToken` are correctly set in the script.
+3. Run `npx hardhat run scripts/deploy-uniswap-x-filler.js --network NETWORK`.

foundry/scripts/deploy-uniswap-x-filler.js

@@ -0,0 +1,62 @@
+require('dotenv').config();
+const {ethers} = require("hardhat");
+const hre = require("hardhat");
+
+async function main() {
+    const network = hre.network.name;
+    let tychoRouter;
+    let uniswapXReactor;
+    let nativeToken;
+    if (network === "ethereum") {
+        tychoRouter = "0xfD0b31d2E955fA55e3fa641Fe90e08b677188d35";
+        uniswapXReactor = "0x00000011F84B9aa48e5f8aA8B9897600006289Be";
+        nativeToken = "0x0000000000000000000000000000000000000000";
+    } else if (network === "base") {
+        tychoRouter = "0xea3207778e39EB02D72C9D3c4Eac7E224ac5d369";
+        uniswapXReactor = "0x000000001Ec5656dcdB24D90DFa42742738De729";
+        nativeToken = "0x0000000000000000000000000000000000000000";
+    } else if (network === "unichain") {
+        tychoRouter = "0xFfA5ec2e444e4285108e4a17b82dA495c178427B";
+        uniswapXReactor = "0x00000006021a6Bce796be7ba509BBBA71e956e37";
+        nativeToken = "0x0000000000000000000000000000000000000000";
+    } else {
+        throw new Error(`Unsupported network: ${network}`);
+    }
+
+    console.log(`Deploying Uniswap X filler to ${network} with:`);
+    console.log(`- Tycho router: ${tychoRouter}`);
+    console.log(`- Uniswap X reactor: ${uniswapXReactor}`);
+    console.log(`- Native token: ${nativeToken}`);
+
+    const [deployer] = await ethers.getSigners();
+    console.log(`Deploying with account: ${deployer.address}`);
+    console.log(`Account balance: ${ethers.utils.formatEther(await deployer.getBalance())} ETH`);
+
+    const UniswapXFiller = await ethers.getContractFactory("UniswapXFiller");
+    const filler = await UniswapXFiller.deploy(tychoRouter, uniswapXReactor, nativeToken);
+
+    await filler.deployed();
+    console.log(`Uniswap X Filler deployed to: ${filler.address}`);
+
+    console.log("Waiting for 1 minute before verifying the contract on the blockchain explorer...");
+    await new Promise(resolve => setTimeout(resolve, 60000));
+
+    // Verify on Etherscan
+    try {
+        await hre.run("verify:verify", {
+            address: filler.address,
+            constructorArguments: [tychoRouter, uniswapXReactor, nativeToken],
+        });
+        console.log(`Uniswap X filler verified successfully on blockchain explorer!`);
+    } catch (error) {
+        console.error(`Error during blockchain explorer verification:`, error);
+    }
+
+}
+
+main()
+    .then(() => process.exit(0))
+    .catch((error) => {
+        console.error("Deployment failed:", error);
+        process.exit(1);
+    });