Super simple go server to allow generating invite links and self-signup. Intended for use with Caddy and Authelia - put the /invite page behind authenticated Caddy settings, and the /signup page public.

Codes are 1 use, currently no expiry time (but each code is a text file, so just delete them periodically i guess).

Plans for v2: Support lldap since currently there's no logic to actually add the generated user to Authelia's user_database.yml file.