add qt impl

Zhao Yuhang

2023-12-15 dddf96c011723a12b11acc2980c10eb370961021

 src/quick/quickwindowagent_p.h

@@ -16,6 +16,10 @@

        // Host
        QQuickWindow *hostWindow{};

#ifdef Q_OS_WINDOWS
        void setupWindows10BorderWorkaround();
#endif
    };

}