add websocket functionality

package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "main": "index.js",
   "scripts": {
-    "once": "tsc && node -r dotenv/config dist/main.js",
+    "start": "tsc && node -r dotenv/config dist/main.js",
     "build": "tsc"
   },
   "type": "module",
@@ -20,6 +20,7 @@
     "ws": "^8.18.3"
   },
   "devDependencies": {
+    "@types/ws": "^8.18.1",
     "prisma": "^6.10.1"
   }
 }