add issue template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,34 @@
+---
+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**
+Please provide us with the following to receive timely help:
+1. A minimum example to reproduce the bug. Keep your code as short as possible but still directly runnable.
+2. Model files, especially when the bug is only triggered on specific models.
+3. **Complete** outputs of the program when the bug is triggered. Please do **not** just include the last few lines. If it's very long, you can use [PasteBin](https://pastebin.com/) or upload to a file-sharing service.
+4. Detailed instructions to reproduce the problem. If you changed part of our tool, please rebase your changes to main branch and push your changes to a fork so we can investigate easier.
+
+Without the above information, you might not be able to receive timely help from us.
+
+
+**System configuration:**
+ - OS: [e.g. Ubuntu 22.04. Windows and MacOS are not supported.]
+ - Python version: [e.g., Python 3.8]
+ - Pytorch Version: [e.g., PyTorch 1.12]
+ - Hardware: [e.g., RTX 4090]
+ - Have you tried to reproduce the problem in a cleanly created conda/virtualenv environment using official installation instructions and the latest code on the main branch?: [Yes/No]
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.