feat: Implement new status feature

lib/utils/client_presence_extension.dart

@@ -1,10 +1,7 @@
 import 'package:famedlysdk/famedlysdk.dart';
 
 extension ClientPresenceExtension on Client {
-  static final Map<String, Profile> presencesCache = {};
-
-  Future<Profile> requestProfileCached(String senderId) async {
-    presencesCache[senderId] ??= await getProfileFromUserId(senderId);
-    return presencesCache[senderId];
-  }
+  List<Presence> get statuses => presences.values
+      .where((p) => p.presence.statusMsg?.isNotEmpty ?? false)
+      .toList();
 }

lib/utils/presence_extension.dart

@@ -5,6 +5,8 @@ import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'date_time_extension.dart';
 
 extension PresenceExtension on Presence {
+  bool get isUserStatus => presence?.statusMsg?.isNotEmpty ?? false;
+
   String getLocalizedStatusMessage(BuildContext context) {
     if (presence.statusMsg?.isNotEmpty ?? false) {
       return presence.statusMsg;

lib/utils/user_status.dart

@@ -0,0 +1,21 @@
+class UserStatus {
+  String statusMsg;
+  String userId;
+  int receivedAt;
+
+  UserStatus();
+
+  UserStatus.fromJson(Map<String, dynamic> json) {
+    statusMsg = json['status_msg'];
+    userId = json['user_id'];
+    receivedAt = json['received_at'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final data = <String, dynamic>{};
+    data['status_msg'] = statusMsg;
+    data['user_id'] = userId;
+    data['received_at'] = receivedAt;
+    return data;
+  }
+}