Ajoute la gestion des adhesions et de la facturation

server/package.json

@@ -11,11 +11,13 @@
     "bcryptjs": "^2.4.3",
     "compression": "^1.7.4",
     "cookie-parser": "^1.4.6",
+    "exceljs": "^4.4.0",
     "express": "^4.19.2",
     "express-rate-limit": "^7.4.0",
     "helmet": "^7.1.0",
     "jsonwebtoken": "^9.0.2",
     "multer": "^1.4.5-lts.1",
+    "pdfkit": "^0.19.1",
     "pg": "^8.12.0",
     "zod": "^3.23.8"
   }