feat: genTsigKey and refresh tsig key

feat: chars -> charsAPIKey

feat: add tsigkey field to domains

fix!: add default to acme_challenge migration

feat: stub AAAA

feat: DNSSEC

feat: handle root A

feat: config rearchitect, lower qName early

fix: templ generate after copy

chore: format

feat: modified msgAcceptFunc to facilitate dynamic updates

feat: answer TXT queries for _acme-challenge

feat: zoneOf function

feat: AcmeChallenge field for domains

feat: APIUrl include protocol

fix: set NS ttl

feat: stub CNAME queries

feat: initial NS and SOA responses

feat: improve logging in parseQuery

feat: log unsupported Opcodes