feat: add issue template

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+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/collaborator_issue_template.md

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+---
+name: Bug report
+about: Apply to become a collaborator
+title: ''
+labels: 'N-Collaborator'
+assignees: ''
+
+---
+
+<!--
+请务必阅读贡献者指南:
+https://github.com/NervJS/taro/blob/master/CONTRIBUTING.md
+-->
+
+**Describe the reason**
+
+<!-- 提名成为 Taro 团队合作者角色模版 -->
+<!-- 基于 @xxx 在过去一个季度对 Taro 社区做出的杰出贡献，特此提名将 @xxx 晋升为合作者。 -->
+<!-- 其相关贡献（至少3个关键贡献点）如下： -->
+<!-- # pull request id -->
+<!-- # pull request id -->
+<!-- # pull request id -->

.github/ISSUE_TEMPLATE/committee_issue_template.md

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+---
+name: Bug report
+about: Apply to become a committee
+title: ''
+labels: 'N-Committee'
+assignees: ''
+
+---
+
+<!--
+请务必阅读贡献者指南:
+https://github.com/NervJS/taro/blob/master/CONTRIBUTING.md
+-->
+
+**Describe the reason**
+
+<!-- 提名成为 Taro 团队合作者角色模版 -->
+<!-- 基于 @xxx 在过去一年对 Taro 在 Harmony 适配等领域做出的杰出贡献和多项重大创新，特此提名将 @xxx 晋升为技术委员会成员。 -->
+<!-- 其相关贡献（至少3个关键贡献点，具体创新点可以文字描述展开）如下： -->
+<!-- # pull request id -->
+<!-- # pull request id -->
+<!-- # pull request id -->

.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.

.github/ISSUE_TEMPLATE/triage_issue_template.md

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+---
+name: Bug report
+about: Apply to become a triage
+title: ''
+labels: 'N-Triage'
+assignees: ''
+
+---
+
+<!--
+请务必阅读贡献者指南:
+https://github.com/NervJS/taro/blob/master/CONTRIBUTING.md
+-->
+
+**Describe the reason**
+
+<!-- 申请成为 Taro 团队助手角色模版 -->
+<!-- 作为一名 Taro 深度用户，我已阅读《Taro 行为准则》和《Taro 贡献者指南》，必将严格遵守相关规则，今天我想要申请加入 Taro 团队成为一名助手，帮着管理 issues、pull requests，同时深入学习 Taro 原理，最终能晋升为一名合作者！望 Taro 越来越好！ -->