Export hash_message [APE-1115]

[fubuloubu]

Overview

Re-export the function for fully hashing an EIP712 message produced using this library into a 32 byte hash usable for signing

Specification

Export the function hash_message (hash_eip712_message would be preferable, but would be a breaking change since it currently exists as a re-export), which should take any subclass of a EIP712Message and product the full hash as a HexBytes value e.g.:

from eth_account.messages import _hash_eip191_message

...

def hash_message(msg: EIP712Message) -> HexBytes:
    return _hash_eip191_message(msg.signable_message)