DeepLinkHandler class

Handles deep linking for the router.

Integrates with app_links package for:

• Initial link (app started via deep link)
• Incoming links (app already running)

Example:

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // Get initial link before app starts
  final initialLink = await DeepLinkHandler.getInitialLink();

  runApp(
    MaterialApp.router(
      routerConfig: RedusRouterConfig(
        routes: routes,
        initialRoute: initialLink ?? '/',
      ),
    ),
  );

  // Listen for incoming links
  DeepLinkHandler.listenToIncomingLinks();
}