Implemented settings, new scan, enhanced UI/UX

lib/feature/scan/repository/scan_repository.dart

@@ -0,0 +1,11 @@
+import 'package:hl_lieferservice/feature/scan/service/scan_service.dart';
+
+class ScanRepository {
+  ScanService service;
+
+  ScanRepository({required this.service});
+
+  Future<void> scanArticle(String internalArticleId) async {
+    return await service.scanArticle(internalArticleId);
+  }
+}