Menu component

[petemill]

Let's take the menu-ness from Dropdown and offer it as a standalone component. @fallaciousreasoning 's idea is that the anchor would be provided via a slot.

How about we have the following component names?

• Floating - popover stuff, mostly provided by floating-ui
• Menu - list of items that is anchored to something (props: isOpen, target)
• Dropdown - opens a menu anchored to the dropdown input
• ButtonMenu - opens a menu when a button is clicked

Things Dropdown can keep that ButtonMenu doesn't really need:

• Extracting the text from an option
• Providing a change event to the consumer