chore: add structured issue template for bug reports

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,32 @@
+name: "🐛 Bug Report"
+description: File a bug report to help us improve Distributed Task Engine
+labels: ["bug", "triage"]
+body:
+  - type: markdown
+    attributes:
+      value: "Thanks for taking the time to report an issue!"
+  - type: textarea
+    id: description
+    attributes:
+      label: "Describe the bug"
+      description: "A clear and concise description of what the bug is."
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: "Steps to Reproduce"
+      description: "Steps to reproduce the behavior."
+      placeholder: |
+        1. Submit task with payload '...'
+        2. Worker picks up job
+        3. See error
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: "Environment"
+      description: "OS, Python version, Redis/Postgres version."
+    validations:
+      required: true