justificatif
GET /justificatif/1
{
"date_debut": "2022-09-25T08:00:00+0200",
"date_fin": "2022-09-25T16:00:00+0200",
"entry_date": "2023-07-28T11:13:45+0200",
"etat": "VALIDE",
"etudid": 1,
"fichier": null,
"justif_id": 1,
"raison": "raison",
"user_id": null
}