应用: 百度
任务: 打开百度，进入“视频”页面，收藏第三个视频
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
step_id: 5
action: STOP