misc: add issue template for bug report (#167)

Change-Id: I5c6ec920eb6ae73d410db570d4b17d9a2fce08e6

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,51 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+
+- What workload are you running? Baremetal workload, bbl+Linux+application or checkpoints?
+- What is the expected behavior? What is the actual behavior?
+- Can this issue be consistently reproduced? If so, what are the steps to reproduce? Can this issue be reproduced in latest xs-dev branch?
+- Can you upload your image or checkpoint to somewhere to help us to reproduce the issue?
+
+**To Reproduce**
+Steps to reproduce the behavior:
+- Build command: typically `scons build/RISCV/gem5.opt`
+- Running command: typically
+```
+mkdir -p util/xs_scripts/test
+cd util/xs_scripts/test
+bash ../kmh_6wide.sh /path/to/checkpoint
+```
+- The link to your image or checkpoint
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Error log or Screenshots**
+
+If applicable, plz provide you error log.
+
+If applicable, add screenshots to help explain your problem.
+
+**Necessary information on versions**
+- XS-GEM5 version: [e.g. xs-dev branch or commit: deadbeaf]
+- NEMU version used as reference design: [e.g. master branch or commid: deadbeaf]
+- Checkpoint restorer version used: [e.g. main branch of OpenXiangShan/LibCheckpointAlpha, or commit: deadbeaf of xxx]
+
+**Additional information**
+If you generate checkpoints your self, you can optionally provide version information of following components:
+- riscv-linux
+- riscv-rootfs
+    - initramfs.txt
+- riscv-pk or OpenSBI
+- GCPT restorer (checkpoint restorer), it might be NEMU in older versions or OpenXiangShan/LibCheckpointAlpha or OpenXiangShan/LibCheckpoint in newer versions
+
+**Additional context**
+Add any other context about the problem here.