应用: 京东
任务: 打开京东，搜索“书包”，筛选“小学生专用”，选第一款加入购物车
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 书包
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: SWIPE
step_id: 6
action: CLICK