应用: 抖音
任务: 打开抖音，点击搜索框，搜索“搞笑短视频”，浏览第一个视频
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 搞笑短视频
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: STOP