Cross-chain Oracle L1 Governor Hub

This function allows the owner of the contract to set a ParentMessengerInterface messenger for a given chainId. The function is declared as public and nonReentrant, meaning that it can only be called once and that it is accessible to anyone. The function also emits an event, SetParentMessenger, which logs the chainId and the address of the messenger. (autogenerated documentation)

This function is used to relay governance requests from the parent chain to a child chain. It takes in a chain ID and an array of GovernorSpoke.Call objects as parameters. It then encodes the calls into a byte array and sends it to the child chain using the messenger associated with the chain ID. Finally, it emits an event with the chain ID, messenger address, calls, and data sent to the child chain. (autogenerated documentation)