应用: 抖音
任务: 打开抖音，点击搜索框，搜索“宠物萌趣”，观看第一个视频
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 宠物萌趣
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: STOP