Devtools Improvements

- Now has tabs setup as more features are added
- First extra tab has basic server info
- Use mobileform to make it look nicer
- For the room data tab allow the room to be changed from within devtools
- For the room data tab allow m.room.member events to be filtered out so other event types can be found easily
- For the room data tab allow viewing room account data

network/neochat#557

src/controller.h

@@ -214,6 +214,8 @@ public:
      */
     Q_INVOKABLE void forceRefreshTextDocument(QQuickTextDocument *textDocument, QQuickItem *item);
 
+    Q_INVOKABLE QVariantList getSupportedRoomVersions(Quotient::Connection *connection);
+
 private:
     explicit Controller(QObject *parent = nullptr);