应用: 淘宝
任务: 打开淘宝,到搜索框找到淘宝热搜第一条，选择商品，按销量排序，找到第一个商品下单
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: CLICK
step_id: 6
action: CLICK