Introduce performance issue template (#21247)

.github/ISSUE_TEMPLATE/06-housekeeping.yaml

@@ -0,0 +1,25 @@
+---
+name: 🏡 Housekeeping
+type: Housekeeping
+description: A change pertaining to the codebase itself (developers only)
+labels: ["netbox", "type: housekeeping"]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        **NOTE:** This template is for use by maintainers only. Please do not submit
+        an issue using this template unless you have been specifically asked to do so.
+  - type: textarea
+    attributes:
+      label: Proposed Changes
+      description: >
+        Describe in detail the new feature or behavior you'd like to propose.
+        Include any specific changes to work flows, data models, or the user interface.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Justification
+      description: Please provide justification for the proposed change(s).
+    validations:
+      required: true