docs: add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[comp: ]"
+labels: bug
+assignees: ''
+
+---
+
+### Reproduction link
+
+
+### Steps to reproduce
+<!-- Clear and concise reproduction instructions are important for us to be able to triage your issue in a timely manner. Note that you can use Markdown to format lists and code. -->
+
+
+### What is expected?
+
+
+### What is actually happening?
+
+
+### Any additional comments? (optional)
+
+
+---
+| Environment | Info |
+|---|---|
+| @idux |     |
+| Browser |     |

.github/ISSUE_TEMPLATE/bug_report.zh.md

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+---
+name: 报告问题
+about: 创建报告以帮助我们改进
+title: "[comp: ]"
+labels: bug
+assignees: ''
+
+---
+
+### Reproduction link
+<!-- 重现链接 -->
+
+
+### Steps to reproduce
+<!-- 重现步骤 -->
+<!-- 简洁清晰的重现步骤能够帮助我们更迅速地定位问题所在。支持使用 Markdown 来格式化列表或是代码片段。 -->
+
+
+### What is expected?
+<!-- 期望的结果是什么？ -->
+
+
+### What is actually happening?
+<!-- 实际的结果是什么？ -->
+
+
+### Any additional comments? (optional)
+<!-- 补充说明（可选） -->
+
+
+---
+| Environment | Info |
+|---|---|
+| @idux |     |
+| Browser |     |
+<!-- 环境信息 -->

.github/ISSUE_TEMPLATE/feature-request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[comp: ]"
+labels: enhancement
+assignees: ''
+
+---
+
+- [ ] I have searched the [issues](https://github.com/IduxFE/components/issues) of this repository and believe that this is not a duplicate.
+
+### What problem does this feature solve?
+<!-- Explain your use case, context, and rationale behind this feature request. More importantly, what is the end user experience you are trying to build that led to the need for this feature? -->
+
+
+### What does the proposed API look like?
+<!-- Describe how you propose to solve the problem and provide code samples of how the API would work once implemented. Note that you can use Markdown to format your code blocks. -->
+

.github/ISSUE_TEMPLATE/feature-request.zh.md

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+---
+name: 功能请求
+about: 为这个项目提出一个想法
+title: "[comp: ]"
+labels: enhancement
+assignees: ''
+
+---
+
+- [ ] I have searched the [issues](https://github.com/IduxFE/components/issues) of this repository and believe that this is not a duplicate.
+
+### What problem does this feature solve?
+<!-- 这个功能解决了什么问题？ -->
+<!-- 请尽可能详尽地说明这个需求的用例和场景。最重要的是：解释清楚是怎样的用户体验需求催生了这个功能上的需求。 -->
+
+
+### What does the proposed API look like?
+<!-- 你期望的 API 是怎样的？-->
+<!-- 描述一下你期望这个新功能的 API 是如何使用的，并提供一些代码示例。请用 Markdown 格式化你的代码片段。 -->
+