Add bug report template

.gitea/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,22 @@
+# Bug Report
+
+### Description
+A clear and concise description of the bug.
+
+## Steps to reproduce
+1. Go to '...'
+2. Click on '...'
+3. Scroll down to '...'
+4. See error
+
+## Expected behavior
+A clear and concise description of what you expected to happen.
+
+## Actual behavior
+A clear and concise description of what actually happens.
+
+## Screenshots
+If applicable, add screenshots to help explain your problem.
+
+## Additional context
+Add any other context about the problem here.