feat: config rearchitect, lower qName early
feat: APIUrl include protocol
feat: config DDNSDomain and SOAEmail
chore: update mod name and dependencies
chore: implement changes from linters, update copyright years
feat: temporary docs on the manage page
feat: some logging improvements
docs: fix doc about dots in domain pattern
refactor: backend -> api, move routers
refactor: directory layout
feat: add note about domain pattern
feat: sessions, login, default admin user
feat: config options for service name and dns pattern