Log in user by creating and registering auth tokens.
POST
/auth/login
Login is based on email and password. If no user match given email and a destkop ID, it looks in matching the desktop ID with the one stored in database. It is useful for clients that run on desktop tools and that don't know user email.
POST /auth/login
curl \
-X POST http://localhost:8080/api/auth/login \
-H "Authorization: $API_KEY"