🤔 [QUESTION] 多折线图/柱图 最值问题求教

### 🐛 Question description [Please make everyone to understand it]

### 💻 Link to minimal reproduction

Please provide a link by forking these links [g2plot](https://codesandbox.io/s/g2plot-reproduction-template-gyej1) or GitHub repo. What is a minimal reproduction, and why is it required?

### 🏞 Expected result
如何像echarts一样指定每条线的最大值最小值，并且使用这样的图标？看了下annotations , 拿不定注意到底是用datamarker还是Shape Annotation, datamarker无法做上图的气泡效果， Shape Annotation,说明很简洁。。看了不会用，有没有这样的示例能不能提供下，谢谢了，另外，如果有群的话，能不能提供下

### 🚑 Any additional [like screenshots]

* **G2Plot Version**:
* **Platform**:

Start with the linked G2Plot reproduction template and review the issue’s references to DataMarker and Shape Annotation. Determine whether the requested per-line maximum/minimum labels and bubble-style appearance are supported, then document a reproducible example or clarify the required feature scope.

Written by the indexing model from the issue text.