应用: 拼多多
任务: 使用拼多多，搜索“牙膏”，点选最上面的商品，添加到收藏
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 牙膏
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: CLICK
step_id: 6
action: STOP