Keep scroll sync

数据同步是基于 p-scroll-sync/issues/1 is data for position chrome.storage an scroll platforms. https://github.com/deguang/kee 实现的。 based on extension chrome.storage synced it's page 这是一个用于在不同设备之间同步页面滚动位置的浏览器扩展程序。 roadmap: (https://developer.chrome.com/extensions/storage) sync across keeping (https://developer.chrome.com/extensions/storage)