feat: adds zk cheatcode for retrieving bytecode hash

[dutterbutter]

Motivation

• ZKsync makes uses of bytecodehash for deployments like create2, this cheatcode aims to provide foundry-zksync users an easier way to retrieve the bytecodehash.

Solution

• Create getRawCodeHash cheatcode to retrieve bytecode hash

Usage example:

counter = new Counter();
(bool success, bytes memory returnData) = address(vm).call(
    abi.encodeWithSignature("getRawCodeHash(address)", address(counter))
);
require(success, "getRawCodeHash call failed");

// Decode the bytecode hash returned by the cheatcode
bytes32 rawCodeHash = abi.decode(returnData, (bytes32));

[Karrq]

Hey @dutterbutter, is this still to be worked on? Considering our recent #604 we could move this implementation to be fully in solidity, for example as a set of methods in forge-zksync-std

[dutterbutter]

@Karrq yes it should be moved to std lib. Will close now.