Routes :
courses GET http://localhost:8080/courses POST http://localhost:8080/courses { "name":"perrin", "date":"2022-07-07T01:08:10Z" }
students GET http://localhost:8080/students POST http://localhost:8080/students { "nom": "crinon", "prenom": "nicolas", "email": "nico@gmail.fr", "password": "a" }
rooms GET http://localhost:8080/rooms POST http://localhost:8080/rooms { "number":226, "capacity":100 }