应用: 快手
任务: 在快手首页找到第十二个视频，点击‘评论’功能
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: SWIPE
step_id: 3
action: SWIPE
step_id: 4
action: CLICK