Added Nextcloud base

lib/api/marianumcloud/talk/chat/getChatResponse.dart

@@ -0,0 +1,53 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:marianum_mobile/api/apiResponse.dart';
+import 'package:marianum_mobile/api/marianumcloud/talk/room/getRoomResponse.dart';
+
+part 'getChatResponse.g.dart';
+
+@JsonSerializable(explicitToJson: true)
+class GetChatResponse extends ApiResponse {
+  Set<GetChatResponseObject> data;
+
+  GetChatResponse(this.data);
+
+  factory GetChatResponse.fromJson(Map<String, dynamic> json) => _$GetChatResponseFromJson(json);
+  Map<String, dynamic> toJson() => _$GetChatResponseToJson(this);
+
+  List<GetChatResponseObject> sortByTimestamp() {
+    List<GetChatResponseObject> sorted = data.toList();
+    sorted.sort((a, b) => a.timestamp.compareTo(b.timestamp));
+    return sorted;
+  }
+}
+
+@JsonSerializable(explicitToJson: true)
+class GetChatResponseObject {
+  int id;
+  String token;
+  GetRoomResponseObjectMessageActorType actorType;
+  String actorId;
+  String actorDisplayName;
+  int timestamp;
+  String systemMessage;
+  GetRoomResponseObjectMessageType messageType;
+  bool isReplyable;
+  String referenceId;
+  String message;
+
+  GetChatResponseObject(
+      this.id,
+      this.token,
+      this.actorType,
+      this.actorId,
+      this.actorDisplayName,
+      this.timestamp,
+      this.systemMessage,
+      this.messageType,
+      this.isReplyable,
+      this.referenceId,
+      this.message);
+
+  factory GetChatResponseObject.fromJson(Map<String, dynamic> json) => _$GetChatResponseObjectFromJson(json);
+  Map<String, dynamic> toJson() => _$GetChatResponseObjectToJson(this);
+}
+