Add partitioning kernel for sorted arrays

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
in order to support order by and partition by within window functions in DataFusion, we'll need to find out partition points on already sorted columns (lexicographically)

Describe the solution you'd like
Add a partition kernel that takes a stream of already sorted records and returns Ranges that map to distinct values of the SortKey

** Context **
@jimexist is working on this feature and I wanted to capture it in a ticket