Create bug_report.md

Author: anitagraser

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+
+name: Bug Report
+about: Create a bug report to help us improve Trajectools
+title: ""
+labels: "bug, needs triage"
+
+---
+
+If you have a question, rather than a bug report, please post in the [discussions](https://github.com/movingpandas/qgis-trajectools/discussions).
+Otherwise, please check: 
+
+- [ ] I have checked that this issue has not already been reported.
+- [ ] I have confirmed this bug exists on the latest version of Trajectools & MovingPandas.
+- [ ] (optional) I have confirmed this bug exists on the main branch of Trajectools & MovingPandas.
+
+---
+
+#### Problem description
+
+#### Expected Output
+
+#### Versions
+
+Operating system:
+
+QGIS version:
+
+Trajectools version:
+
+MovingPandas version: 
+