Update issue templates

update "bug report" issue template for better debug

Author: AgentDS

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+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.
+
+**Environment**
+Environment you use when bug appears:
+1. Python version
+2. PyTorch Version
+3. FedLab version
+4. code you run
+5. the detailed error
+
+
+**Additional context**
+Add any other context about the problem here.