add reverb container, unread attribute in notification pivot table and private channel and event for new register

package.json

@@ -10,7 +10,9 @@
         "@tailwindcss/vite": "^4.0.0",
         "axios": "^1.11.0",
         "concurrently": "^9.0.1",
+        "laravel-echo": "^2.2.7",
         "laravel-vite-plugin": "^2.0.0",
+        "pusher-js": "^8.4.0",
         "tailwindcss": "^4.0.0",
         "vite": "^7.0.7"
     }