DEVELOPMENT ENVIRONMENT

~liljamo/felu

ref: 6e0ca50953f70389d6a917f4bbab04688b00655f felu/cmd d---------
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