Add issue templates (#19)

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,23 @@
+name: Feature request/新特性请求
+description: Suggest an idea./提出建议
+labels: [enhancement]
+title: "[Feature Request] Short description/简单描述"
+body:
+  - type: textarea
+    attributes:
+      label: Is your feature request related to a problem?/你的请求是否与某个问题相关？
+      placeholder: A clear and concise description of what the problem is./请清晰准确表述该问题。
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Describe the solution you'd like/描述你想要的解决方案
+      placeholder: A clear and concise description of what you want to happen./请清晰准确描述新特性的预期行为
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Additional context/其他信息
+      placeholder: Add any other context or screenshots about the feature request here./其他关于新特性的信息或者截图
+    validations:
+      required: false