new: usr: Implement RFC 9567: EDNS Report-Channel option

Add new send-report-channel and log-report-channel options. send-report-channel specifies an agent domain, to which error reports can be sent by querying a specially constructed name within the agent domain. EDNS Report-Channel options will be added to outgoing authoritative responses, to inform clients where to send such queries in the event of a problem.

If a zone is configured which matches the agent domain and has log-report-channel set to yes, error-reporting queries will be logged at level info to the dns-reporting-agent logging channel.

Closes #3659