Area
Web Components (@fluentui/web-components)
Describe the feature that you would like added
Please add the start/end slot concept that other fluentui web-components implement to the fluent-tree-view component.
It would be very helpful to be able to use these to implement things like this without messing around with css overrides.

Additional context
No response
Have you discussed this feature with our team
No response
Validations
- Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.
Priority
Medium