---OBJECTS---
user ={ -id -email -pwd -ruolo ?firstName ?secondName ?phone ?position }
location = { -id -description -position }
---CRUD---
POST /signup {user}
POST /signin {email, pwd}
GET /signout
GET /location []
GET /location/:id
AUTH Role == "ADMIN"
POST /locations {location}
PATCH /location/:id {location}
DELETE /location/:id
---DA DECIDERE---
GET /me
PATCH /me {utente}
GET /users []
GET /user/:id