fix: Add prisma seed config to package.json

backend/package.json

@@ -9,6 +9,9 @@
     "test": "jest",
     "lint": "eslint src/**/*.ts"
   },
+  "prisma": {
+    "seed": "node prisma/seed.js"
+  },
   "dependencies": {
     "@prisma/client": "^5.7.0",
     "fastify": "^4.25.0",
@@ -24,4 +27,4 @@
     "jest": "^29.7.0",
     "eslint": "^8.56.0"
   }
-}
+}