Debugger: Implement QmlEngine::doUpdateLocals

This allows us to sort the locals by name immediately when the action
is triggered.

Task-number: QTCREATORBUG-16645
Change-Id: Ifd24f49e66523af5e988065c9a33aae00e7fb290
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/qml/qmlengine.h

@@ -129,6 +129,8 @@ private:
     bool hasCapability(unsigned) const override;
     void quitDebugger() override;
 
+    void doUpdateLocals(const UpdateParameters &params) override;
+
     void closeConnection();
     void startApplicationLauncher();
     void stopApplicationLauncher();