Add VisibilityService for managing app visibility state and connection recovery

- Introduce a new VisibilityService to handle application visibility state, including online/offline status and connection management.
- Update DI container to register the new VisibilityService and integrate it into the base module.
- Modify BaseService to include visibilityService as a dependency, ensuring proper initialization and error handling.
- Enhance RelayHub to register with VisibilityService for improved connection management during visibility changes.
- Refactor related components to utilize the new service, streamlining visibility handling across the application.

src/core/di-container.ts

@@ -117,6 +117,9 @@ export const SERVICE_TOKENS = {
   // Payment services
   PAYMENT_SERVICE: Symbol('paymentService'),
   
+  // Visibility services
+  VISIBILITY_SERVICE: Symbol('visibilityService'),
+  
   // Market services
   MARKET_STORE: Symbol('marketStore'),
   PAYMENT_MONITOR: Symbol('paymentMonitor'),