Add devtools button to account menu

src/models/statemodel.cpp

@@ -39,6 +39,9 @@ void StateModel::loadState()
 {
     beginResetModel();
     m_stateEvents.clear();
+    if (!m_room) {
+        return;
+    }
     const auto keys = m_room->currentState().events().keys();
     for (const auto &[type, stateKey] : keys) {
         if (!m_stateEvents.contains(type)) {

src/models/statemodel.h

@@ -68,7 +68,7 @@ Q_SIGNALS:
     void roomChanged();
 
 private:
-    NeoChatRoom *m_room = nullptr;
+    QPointer<NeoChatRoom> m_room;
 
     /**
      * @brief A map from state event type to number of events of that type