Modification des pages d'authentification

backend/package.json

@@ -22,6 +22,8 @@
     "morgan": "^1.10.0",
     "multer": "^1.4.5-lts.1",
     "nodemailer": "^8.0.11",
+    "otplib": "^13.4.1",
+    "qrcode": "^1.5.4",
     "sharp": "^0.34.5",
     "xlsx": "^0.18.5",
     "zod": "^3.23.8"