Phat Bricks Version of Oracle

Steps

1. Deploy the client smart contract following the EVM tutorial and record its address;
2. Run the Phat Bricks backend following the Phat tutorial. Make sure the ANCHOR is set to the address above;
   1. The backend will keep running and listen to the requests from your smart contract;
3. Check the backend logs in your console to find the identity of ActionOffchainRollup;
4. Setup your smart contract by replacing the arguments in the ./scripts/testnet-set-attestor.ts and then run npx hardhat run --network mumbai ./scripts/testnet-set-attestor.ts under evm folder;
5. Append new request by running npx hardhat run --network mumbai ./scripts/testnet-push-request.ts, still replace the argument.