Support dropdown menu

[lifeofpi2012]

Checklist

• [X] I have searched the existing issues for similar feature requests.
• [X] I added a descriptive title and summary to this issue.

Summary

I'm so thankful to your nav bar, I've already setup it in my personal work. However, my nav bar has too many options, and I'd bettern to put the functionally similar options to a dropdown menu. I've already read the Roadmap but cannot find the estimated day for the "Add dropdown navigation" feature.

Why?

We can put the functionally similar options to a dropdown menu that make our nav bar more simple and concise

How?

No response

Additional context

No response