feat(chats,diary): added logic for chosen diet portions and added banner to finish plan to chats

lib/features/chat/models/plan_complain_model.dart

@@ -0,0 +1,14 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'plan_complain_model.freezed.dart';
+part 'plan_complain_model.g.dart';
+
+@freezed
+class PlanComplainModel with _$PlanComplainModel {
+
+  factory PlanComplainModel({
+    @JsonKey(name: 'description') required String description,
+  }) = _PlanComplainModel;
+
+  factory PlanComplainModel.fromJson(Map<String, dynamic> json) => _$PlanComplainModelFromJson(json);
+}