feat: Implement secure VAPID key generation for push notifications

- Replace random key generation with the web-push library for generating cryptographically secure VAPID keys.
- Update console output to guide users on adding keys to their environment configuration.
- Enhance error handling for VAPID key generation issues.
- Add web-push dependency to package.json and package-lock.json for proper functionality.

package.json

@@ -69,7 +69,8 @@
     "vite-plugin-image-optimizer": "^1.1.7",
     "vite-plugin-inspect": "^0.8.3",
     "vite-plugin-pwa": "^0.21.1",
-    "vue-tsc": "^2.2.0"
+    "vue-tsc": "^2.2.0",
+    "web-push": "^3.6.7"
   },
   "build": {
     "appId": "com.yourdomain.aio-shadcn-vite",