function deployCode(string memory what) public returns (address);function deployCode(string memory what, bytes memory args) public returns (address);Deploys a contract by fetching the contract bytecode from the artifacts directory.
The calldata parameter can either be in the form ContractFile.sol (if the filename and contract name are the same), ContractFile.sol:ContractName, or the path to an artifact, relative to the root of your project.
address deployment = deployCode("MyContract.sol", abi.encode(arg1, arg2));