Enable locking screen orientation programmatically

#ifdef Q_OS_ANDROID
// see https://falsinsoft.blogspot.com/2018/02/qml-change-android-screen-orientation.html
// https://developer.android.com/reference/android/content/pm/ActivityInfo.html#SCREEN_ORIENTATION_SENSOR_LANDSCAPE == 6
// CREEN_ORIENTATION_SENSOR_LANDSCAPE == 0
bool ApplicationUI::setScreenOrientationLandscape()
{
    QAndroidJniObject activity = QtAndroid::androidActivity();

    if(activity.isValid())
    {
        activity.callMethod<void>("setRequestedOrientation", "(I)V", 0);
        return true;
    }

    return false;
}
#endif

#ifdef Q_OS_IOS
void ApplicationUI::setLandscape()
{
    // setLandscapeLeft
    IosUtil* mIosUtil = nullptr;
    mIosUtil = new IosUtil(this);
    mIosUtil->setLandscape();
}
#endif