应用: 快手
任务: 打开快手，搜索“李华”并关注
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 李华
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: STOP