Add a export for usePaginationContext

[welpie21]

Is your feature request related to a problem? Please describe.
I'm making a implementation of the pagination component and want to style it. But since I want to re-use a existing component called Button. I have no way to control the behaviour of the button for example when it's active or not.

Describe the solution you'd like
Exporting the usePaginationContext will give me the needed properties to match what active is or not. And if the current page on the item is active I can set the property ( which is custom ) to something.

Describe alternatives you've considered
Since the're no other properties exposed I have not found an alertnative solution to my problem.

Additional context
the Button has a variant prop with the values light, filled, outlined, etc. When a button is active the variant should be filled instead of light. Since there is no property I can grab to match against something, that this is kind of a dead end for me.