应用: 京东
任务: 打开京东，搜索“平板电脑”，选择第一个商品
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 平板电脑
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: CLICK
step_id: 6
action: CLICK
step_id: 7
action: TYPE
type_text: 平板电脑
step_id: 8
action: CLICK
step_id: 9
action: CLICK
step_id: 10
action: STOP