feat(xep): Track our own affiliation and role

packages/moxxmpp/lib/src/xeps/xep_0045/events.dart

@@ -3,14 +3,25 @@ import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/xeps/xep_0045/types.dart';
 
 /// Triggered when the MUC changes our nickname.
-class NickChangedByMUCEvent extends XmppEvent {
-  NickChangedByMUCEvent(this.roomJid, this.nick);
+class OwnDataChangedEvent extends XmppEvent {
+  OwnDataChangedEvent(
+    this.roomJid,
+    this.nick,
+    this.affiliation,
+    this.role,
+  );
 
   /// The JID of the room.
   final JID roomJid;
 
-  /// The new nickname.
+  /// Our nickname.
   final String nick;
+
+  /// Our affiliation.
+  final Affiliation affiliation;
+
+  /// Our role.
+  final Role role;
 }
 
 /// Triggered when an entity joins the MUC.

packages/moxxmpp/lib/src/xeps/xep_0045/types.dart

@@ -149,6 +149,13 @@ class RoomState {
   /// Flag whether we're joined and can process messages
   bool joined;
 
+  /// Our own affiliation inside the MUC.
+  Affiliation? affiliation;
+
+  /// Our own role inside the MUC.
+  Role? role;
+
+  /// The list of messages that we sent and are waiting for their echo.
   late final List<PendingMessage> pendingMessages;
 
   /// "List" of entities inside the MUC.

packages/moxxmpp/lib/src/xeps/xep_0045/xep_0045.dart

@@ -300,20 +300,32 @@ class MUCManager extends XmppManagerBase {
       final role = Role.fromString(
         item.attributes['role']! as String,
       );
+      final affiliation = Affiliation.fromString(
+        item.attributes['affiliation']! as String,
+      );
 
       if (statuses.contains('110')) {
-        if (room.nick != from.resource) {
-          // Notify us of the changed nick.
+        if (room.joined) {
+          if (room.nick != from.resource ||
+              room.affiliation != affiliation ||
+              room.role != role) {
+            // Notify us of the changed data.
             getAttributes().sendEvent(
-            NickChangedByMUCEvent(
+              OwnDataChangedEvent(
                 bareFrom,
                 from.resource,
+                affiliation,
+                role,
               ),
             );
           }
+        }
 
-        // Set the nick to make sure we're in sync with the MUC.
-        room.nick = from.resource;
+        // Set the data to make sure we're in sync with the MUC.
+        room
+          ..nick = from.resource
+          ..affiliation = affiliation
+          ..role = role;
         logger.finest('Self-presence handled');
         return StanzaHandlerData(
           true,