Feat: Stellt den BackgroundManager auf IsolateManager um

lib/Tasks/background_init.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/services.dart';
+import 'package:logger/logger.dart';
+
+import '../Controller/port_controller.dart';
+
+/// Initialisiert benötigte Services in Background-Isolates
+Future<void> initBackground() async {
+  final Logger logger = Logger()..d('Init Background for Native');
+
+  final RootIsolateToken? rootIsolateToken = await PortController()
+      .getRootIsolateToken();
+  if (rootIsolateToken != null) {
+    logger.i('Initialising BackgroundIsolateBinaryMessenger...');
+    BackgroundIsolateBinaryMessenger.ensureInitialized(rootIsolateToken);
+  }
+}