Update issue templates

Author: tuoping

.github/ISSUE_TEMPLATE/about-input-files.md

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+---
+name: About input files
+about: For issues that do not fit any of the other categories. If this doesn’t work
+  right, [choose a different type]( https://github.com/deepmodeling/deepmd-kit/issues/new/choose).
+title: "[About input files] _Replace With Suitable Title_"
+labels: document
+assignees: ''
+
+---
+
+**Summary**
+
+<!--Please provide a clear and concise description of what question is.-->
+
+**Expected Behavior**
+
+<!--Describe the expected behavior.  Quote from the deepmd-kit manual where needed, or explain why the expected behavior is meaningful, especially when it differs from the manual-->
+
+**Actual Behavior**
+
+<!--Describe the actual behavior, how it differs from the expected behavior, and how this can be observed.  Try to be specific and do **not** use vague terms like "doesn't work" or "wrong result".  Do not assume that the person reading this has any experience with or knowledge of your specific area of research.-->
+
+**The material system in question**
+
+<!--Specify your material system, and exactly what behaviors or properties you are looking for.-->
+
+**Further Information, Files, and Links**
+
+<!--Put any additional information here, attach relevant text or image files and URLs to external sites, e.g. relevant publications-->

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug report
+about: Create a bug report to help us eliminate issues and improve deepmd-kit. If
+  this doesn’t look right, [choose a different type](https://github.com/deepmodeling/deepmd-kit/issues/new/choose).
+title: "[BUG] _Replace With Suitable Title_"
+labels: bug
+assignees: ''
+
+---
+
+**Summary**
+
+<!--Please provide a clear and concise description of what the bug is.-->
+
+**Deepmd-kit Version, Python Version, Tensorflow Version, GCC Version and Cuda Version.**
+
+<!--Please specify precisely which Deepmd-kit version this issue was detected with on what build environment, (Python Version and GCC Version are in the first and second line of Python command line interface respectively. And check the Deepmd-kit Version with command line "print(deepmd.__version__)"). -->
+
+<!--If necessary, specify what platform you are running on. -->
+
+**Steps to Reproduce**
+
+<!--Describe the steps required to (quickly) reproduce the issue. You can attach (small) files to the section below or add URLs where to download an archive with all necessary files. Please try to create an input set that is as minimal and small as possible and reproduces the bug as quickly as possible. **NOTE:** the less effort and time it takes to reproduce your reported bug, the more likely it becomes, that somebody will look into it and fix the problem.-->
+
+**Further Information, Files, and Links**
+
+<!--Put any additional information here, attach relevant text or image files and URLs to external sites, e.g. relevant publications-->

.github/ISSUE_TEMPLATE/feature-request.md

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+---
+name: Feature request
+about: Suggest an idea for this project. If this doesn’t work right, [choose a different
+  type]( https://github.com/deepmodeling/deepmd-kit/issues/new/choose)
+title: "[Feature Request] _Replace with Title_"
+labels: new feature
+assignees: ''
+
+---
+
+**Summary**
+
+<!--Please provide a brief and concise description of the suggested feature or change-->
+
+**Detailed Description**
+
+<!--Please explain how you would like to see LAMMPS enhanced, what feature(s) you are looking for, what specific problems this will solve. If possible, provide references to relevant background information like publications or web pages, and whether you are planning to implement the enhancement yourself or would like to participate in the implementation. If applicable add a reference to an existing bug report or issue that this will address.-->
+
+**Further Information, Files, and Links**
+
+<!--Put any additional information here, attach relevant text or image files and URLs to external sites, e.g. relevant publications-->