Add bug report issue template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: bug
+assignees: SaschaMann
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Workflow file to reproduce the behavior:
+
+```yaml
+
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots/Build logs**
+If applicable, add screenshots to help explain your problem.
+
+If possible, set the repo secret `ACTIONS_STEP_DEBUG` to `true` to [enable debug logs](https://github.com/actions/toolkit/blob/master/docs/action-debugging.md#how-to-access-step-debug-logs) and run the build again for more detailled logs.
+
+**Additional context**
+Add any other context about the problem here.