feat(treenav): labels for navigation

[ChitlangeSahas]

Closes https://github.com/influxdata/clockface/issues/843

https://user-images.githubusercontent.com/18511823/192340950-4b0be639-a86b-4baa-a055-fc620e873333.mov

Changes

// Describe what you changed

Screenshots

// Add screenshots here if relevant

Checklist

Check all that apply

• [x] Updated documentation to reflect changes
• [x] Added entry to top of Changelog with link to PR (not issue)
• [x] Tests pass
• [ ] Peer reviewed and approved
• [ ] Signed CLA (if not already signed)