feat: add issue template

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,16 @@
+---
+name: Feature Request
+about: If you have any interesting advice, you can tell us.
+---
+
+## Specific Demand
+
+<!--
+What feature do you need, please describe it in detail.
+-->
+
+## Implement Suggestion
+
+<!--
+If you have any suggestion for complete this feature, you can tell us.
+-->