HarmonyOS 如何监听软键盘的弹起与收起及获取软键盘高度

示例参考：

try {
  windowClass.on('keyboardHeightChange', (data) => {
    console.info('Succeeded in enabling the listener for keyboard height changes. Data: ' +
    JSON.stringify(data));
  });
} catch (exception) {
  console.error('Failed to enable the listener for keyboard height changes. Cause: ' +
  JSON.stringify(exception));
}

参考链接：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-window-V5#onkeyboardheightchange7