✨ Chat, chat local db, chat messaging retriving (no sync yet)

lib/models/user.dart

@@ -30,7 +30,9 @@ abstract class SnAccountProfile with _$SnAccountProfile {
     required String? middleName,
     required String? lastName,
     required String? bio,
+    required String? pictureId,
     required SnCloudFile? picture,
+    required String? backgroundId,
     required SnCloudFile? background,
     required DateTime createdAt,
     required DateTime updatedAt,