应用: 饿了么
任务: 打开饿了么，进入全能超市，搜索“牛奶”
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: TYPE
type_text: 牛奶
step_id: 5
action: CLICK
step_id: 6
action: STOP