Protocol error handling

[boks1971]

For signalling responses,

• RequestResponse will be used
• If request has a request_id field (currently only in UpdateParticipantMetadata), a success response is also expected by sender.
• For errors, the request is included in the response so that senders have context of the request which caused the error.

This PR adds a few requests to the response. We can add more over time.

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[boks1971]

@lukasIO @hiroshihorie please let me know if you have feedback. Going to merge this on @anunaym14 's review. Will address in subsequent PR if there is more feedback.