Update issue templates

.github/ISSUE_TEMPLATE/----.md

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+---
+name: 功能建议
+about: 为项目提供一些功能上的建议
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**你的建议是否涉及到一些现有的问题? 请描述清楚**
+
+简单而清晰的问题描述（例如：当我 xxx 时，我感到很疑惑）。
+
+**描述你想实现的效果**
+
+简单并清晰的描述你想实现的效果是怎样的。
+
+**描述一些方案**
+
+简单描述一下你想到的方案有哪些。
+
+**额外信息**
+
+你可以提供一些额外的信息或截图给我们进行参考。

.github/ISSUE_TEMPLATE/--.md

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+---
+name: 缺陷
+about: 帮助我们解决存在的问题
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.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.