Replace expo-notifications with JPush for push notifications across the app.
This includes adding JPush native module dependencies, configuring the JPush
plugin in app.json, implementing jpushService wrapper, and updating notification
services to use JPush APIs. Also adds device registration on token refresh for
both mobile and web platforms.
BREAKING CHANGE: expo-notifications removed in favor of JPush for push notifications
- Updated App entry point to utilize Expo Router, simplifying the navigation setup.
- Removed legacy navigation components and services to streamline the codebase.
- Adjusted package.json to reflect the new entry point and updated dependencies for compatibility.
- Enhanced overall application structure by consolidating navigation logic and improving maintainability.
