应用: 今日头条
任务: 使用今日头条，进入头条，搜索‘娱乐’
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 娱乐
step_id: 3
action: CLICK
step_id: 4
action: STOP