Add `Overflow` component

Feature request

Summary

Add the Overflow + OverflowItem component and utilities. This allows you to manually implement an overflow mechanism in any component.

Examples in other libraries

• FluentUI Oveflow Storybook

Motivation

I have this Tabs component with its logic. If the tab items don't fit in the container, they should be moved to the "More" menu. The same example is also available in the FluentUI Storybook Default example. Here's a screenshot of it: