应用: 快手
任务: 启动快手，找到搜索框下方的热榜，阅读第30个热门话题
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: SWIPE
step_id: 3
action: CLICK
step_id: 4
action: STOP