Add templates

.github/ISSUE_TEMPLATE/00-bug-report.md

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+---
+name: Bug report
+about: Tell us about a problem you are experiencing
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Checklist**
+
+- [ ] I read the [README](https://github.com/hwdsl2/wireguard-install/blob/master/README.md)
+- [ ] I followed instructions to [configure VPN clients](https://github.com/hwdsl2/wireguard-install/blob/master/docs/clients.md)
+- [ ] I searched existing [Issues](https://github.com/hwdsl2/wireguard-install/issues?q=is%3Aissue)
+- [ ] This bug is about the VPN setup script, and not WireGuard VPN itself
+
+**Describe the issue**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+1. ...
+2. ...
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Logs**
+Add error logs to help explain the problem, if applicable.
+
+**Server (please complete the following information)**
+- OS: [e.g. Debian 11]
+- Hosting provider (if applicable): [e.g. GCP, AWS]
+
+**Client (please complete the following information)**
+- Device: [e.g. iPhone 12]
+- OS: [e.g. iOS 15]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/10-bug-report-zh.md

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+---
+name: 错误报告
+about: 请使用这个模板来提交 bug
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**任务列表**
+
+- [ ] 我已阅读 [自述文件](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md)
+- [ ] 我已按照说明 [配置 VPN 客户端](https://github.com/hwdsl2/wireguard-install/blob/master/docs/clients-zh.md)
+- [ ] 我搜索了已有的 [Issues](https://github.com/hwdsl2/wireguard-install/issues?q=is%3Aissue)
+- [ ] 这个 bug 是关于 VPN 安装脚本，而不是 WireGuard VPN 本身
+
+**问题描述**
+使用清楚简明的语言描述这个 bug。
+
+**重现步骤**
+重现该 bug 的步骤：
+
+1. ...
+2. ...
+
+**期待的正确结果**
+简要地描述你期望的正确结果。
+
+**日志**
+添加错误日志以帮助解释该问题（如果适用）。
+
+**服务器信息（请填写以下信息）**
+- 操作系统: [比如 Debian 11]
+- 服务提供商（如果适用）: [比如 GCP, AWS]
+
+**客户端信息（请填写以下信息）**
+- 设备: [比如 iPhone 12]
+- 操作系统: [比如 iOS 15]
+
+**其它信息**
+添加关于该 bug 的其它信息。

.github/ISSUE_TEMPLATE/20-enhancement-request.md

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+---
+name: Enhancement request
+about: Suggest an improvement for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Checklist**
+
+- [ ] I searched existing [Issues](https://github.com/hwdsl2/wireguard-install/issues?q=is%3Aissue), and did not find a similar enhancement request
+- [ ] This enhancement request is about the VPN setup script, and not WireGuard VPN itself
+- [ ] I read the [README](https://github.com/hwdsl2/wireguard-install/blob/master/README.md)
+- [ ] I followed instructions to [configure VPN clients](https://github.com/hwdsl2/wireguard-install/blob/master/docs/clients.md)
+
+**Describe the enhancement request**
+A clear and concise description of your enhancement request.
+
+**Is your enhancement request related to a problem? Please describe.**
+(If applicable) A clear and concise description of what the problem is.
+
+**Additional context**
+Add any other context about the enhancement request here.

.github/ISSUE_TEMPLATE/30-enhancement-request-zh.md

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+---
+name: 改进建议
+about: 请使用这个模板来提交改进建议
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**任务列表**
+
+- [ ] 我搜索了已有的 [Issues](https://github.com/hwdsl2/wireguard-install/issues?q=is%3Aissue)，没有找到类似的改进建议
+- [ ] 这个改进建议是关于 VPN 安装脚本，而不是 WireGuard VPN 本身
+- [ ] 我已阅读 [自述文件](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md)
+- [ ] 我已按照说明 [配置 VPN 客户端](https://github.com/hwdsl2/wireguard-install/blob/master/docs/clients-zh.md)
+
+**描述改进建议**
+使用清楚简明的语言描述你的改进建议。
+
+**你的改进建议与遇到的问题有关吗？请描述。**
+（如果适用）清楚，简洁地说明问题所在。
+
+**其它信息**
+添加关于该改进建议的其它信息。