[FEA]: Add functions to cub::WarpScan that operate on array of elements

[fkallen]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this request and that I agree to the Code of Conduct

Area

CUB

Is your feature request related to a problem? Please describe.

For example, cub::BlockScan provides

ExclusiveSum(
    T (&input)[ITEMS_PER_THREAD],
    T (&output)[ITEMS_PER_THREAD]
)

but cub::WarpScan does not.

Describe the solution you'd like

Provide functions that operate on multiple elements.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Hi @fkallen!

Thanks for submitting this issue - the CCCL team has been notified and we'll get back to you as soon as we can!
In the mean time, feel free to add any relevant information to this issue.