Implemented new set article mechanism for unscannable articles

lib/dto/set_article_amount_request.dart

@@ -0,0 +1,23 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'set_article_amount_request.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class SetArticleAmountRequestDTO {
+  SetArticleAmountRequestDTO({
+    required this.articleId,
+    required this.deliveryId,
+    required this.amount,
+    this.reason
+  });
+
+  String deliveryId;
+  int amount;
+  String articleId;
+  String? reason;
+
+  factory SetArticleAmountRequestDTO.fromJson(Map<String, dynamic> json) =>
+      _$SetArticleAmountRequestDTOFromJson(json);
+
+  Map<dynamic, dynamic> toJson() => _$SetArticleAmountRequestDTOToJson(this);
+}

lib/dto/set_article_amount_response.dart

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+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);
+}