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
Merge branch '3659-implement-draft-ietf-dnsop-dns-error-reporting' into 'main'
See merge request isc-projects/bind9!7036