杨腿

feat: add icon to collapsible

4

**What I did:** Add choice "icon" to "collapsible", which could be "header" or "disabled". **Why I want to do so:** There's a scene that I want to use Collapse to...

When there's Chinise in my csv file, I got garbled characters like this: 

开发环境正常，生产环境报错：ReferenceError: _jsxs is not defined 编译后的代码如图：  ------- 开发环境和生产环境共用lock文件。在本地执行build，对应位置并没有_jsxs字样；已经尝试了调整babel-presets，但无效。