docs: update README.md

feat: add RFC 2136 docs for lego

feat: sane SOA ttls

feat: handle update queries for _acme-challenge

feat: tsig

feat: handle CAA queries (poorly)

feat: custom TsigProvider implementation

feat: refresh tsigKey frontend, revamp reused components

fix: set tsigKey when creating a domain

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