Pull Request Template

Description

增加播放器 Controller 控件和播放节点 ProgressDot 的相关 event 和 action，以实现跨窗口通信

• SHOW_CONTROLLER，展示 Controller （event & action）
• HIDE_CONTROLLER，隐藏 Controller (event)
• HOVER_PROGRESS_DOT，鼠标 hover 播放节点（event）
• LEAVE_PROGRESS_DOT，鼠标离开播放节点（event）

hover ProgressDot 播放节点时进度条高度增加至 6px

How Has This Been Tested?

• 本地 yarn start 测试 event

• IframePage 中增加显示进度条的 action example 测试通过

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules