Update issue templates: add feature request template

Author: ly525

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,24 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**这个新特性和一个问题相关吗？简单描述下，比如我什么场景下，需要解决什么问题，发现表格不支持这个功能**
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**描述下，你希望得到的什么解决方案 **
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**是否有不错的替代方案**
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**附加信息**
+**Additional context**
+Add any other context or screenshots about the feature request here.