Update issue templates

Author: ikesnowy

.github/ISSUE_TEMPLATE/bug-反馈.md

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+---
+name: Bug 反馈
+about: 代码不起作用/抛出异常/结果不正确
+title: "[BUG]"
+labels: bug, untriaged
+assignees: ikesnowy
+
+---
+
+**环境信息**
+安装的包及版本（例如 `Cnblogs.DashScope.Sdk/v0.7.6`）：
+`.NET` 版本（例如 `net8.0）`：
+使用的模型名称（例如 `qwen-max`）：
+
+**复现流程**
+
+进行如下调用时触发了 bug：
+
+```csharp
+// 输入参数
+
+// 调用的方法
+
+```
+
+**预期结果**
+按预期，以上调用应当返回 xxx 结果
+
+**其他相关信息**
+例如初步 debug 截图/部署方法（IIS， docker，k8s，控制台等）/日志信息/使用场景/访问规模等有关 BUG 出现场景的信息。

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**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 [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.