feat: API for accessing 'scroll' properties of the inner list element

[Lordfirespeed]

I'm trying to implement something like https://github.com/PrinceLoren/shadcn-combobox-virtualized-infinity/.

They aren't using the Command.List primitive because they need access to the scrollTop (and a couple of other properties) of the scroll container, to know when to load more results.

I would prefer to continue using the Command.List primitive, especially since that was made mandatory in [email protected], but would need access to its ref to be able to implement what I want; alternatively, to be specific, the functionality I need consists of

• a boolean isScrolledToBottom, which is a function of
  • scrollHeight
  • scrollTop
  • clientHeight
• the ability to register an onScroll listener, probably via some negotiator that merges or registers listeners in case multiple are registered

Exporting the useCommand hook would be sufficient for me, but #104 was closed as 'not planned' so that might be off the table.
Perhaps another hook such as useCommandListScroll ?