Improve README

We could do something like this for the API Routes

/user

GET /user/profile

Requires USER_ID Cookie

Response

{
   "id": "b2c3d4e5-f6g7-8901-bcde-f23456789012",
   "full_name": "Maria Oliveira Costa",
   "registration": "000000",
   "user_role": "Desenvolvedor",
   "email": "maria.oliveira@empresa.com.br",
   "phone": "+55 (81) 9 8888-8888"
}