refactor: Add severity dropdown to bug report template

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -29,6 +29,19 @@ body:
       placeholder: 1.0.0
     validations:
       required: true
+  - type: dropdown
+    id: severity
+    attributes:
+      label: Severity impact
+      options:
+        - Low (visual glitch, minor inconvenience)
+        - Medium (major inconvenience, but workaround exists)
+        - High (badly broken, no workaround)
+        - Critical (data loss, security issue)
+        - Enhancement (feature request) [we like these too!]
+    validations:
+      required: true
+
   - type: dropdown
     id: platform
     attributes: