Implemented new set article mechanism for unscannable articles

lib/dto/set_article_amount_response.dart

@@ -0,0 +1,21 @@
+import 'package:hl_lieferservice/dto/basic_response.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'set_article_amount_response.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class SetArticleAmountResponseDTO extends BasicResponseDTO {
+  SetArticleAmountResponseDTO({
+    required super.succeeded,
+    required super.message,
+    this.noteId
+  });
+
+  String? noteId;
+
+  factory SetArticleAmountResponseDTO.fromJson(Map<String, dynamic> json) =>
+      _$SetArticleAmountResponseDTOFromJson(json);
+
+  @override
+  Map<dynamic, dynamic> toJson() => _$SetArticleAmountResponseDTOToJson(this);
+}