feat(chat): Messages list fill, message model

lib/presentation/chat/chat_screen/models/chat_message_model.dart

@@ -0,0 +1,36 @@
+import 'package:equatable/equatable.dart';
+
+class ChatMessageModel extends Equatable {
+  final int id;
+  final String data;
+  final List<dynamic> mediaData;
+  final int authorId;
+  final String updatedAt;
+
+  ChatMessageModel({
+    required this.id,
+    required this.data,
+    required this.mediaData,
+    required this.authorId,
+    required this.updatedAt,
+  });
+
+  ChatMessageModel copyWith({
+    int? id,
+    String? data,
+    List<dynamic>? mediaData,
+    int? authorId,
+    String? updatedAt,
+  }) {
+    return ChatMessageModel(
+      id: id ?? this.id,
+      data: data ?? this.data,
+      mediaData: mediaData ?? this.mediaData,
+      authorId: authorId ?? this.authorId,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  @override
+  List<Object?> get props => [id, data, mediaData, authorId, updatedAt];
+}