DEVELOPMENT ENVIRONMENT

~liljamo/felu

ref: fa29c9640b88b5d9434c16d6feaac4dc5a42c655 felu/cmd d---------
feat: serve dns on tcp too
chore: update mod name and dependencies
chore: implement changes from linters, update copyright years
feat: some logging improvements
refactor: backend -> api, move routers
refactor: move more to handlers
refactor: directory layout