Implement the histogram algorithm for standard aligned execution policies
Summary:
The oneDPL specification 1.4 adds the histogram algorithm as described in https://github.com/uxlfoundation/oneAPI-spec/pull/571
While it is already supported for device execution policies, the implementation for standard aligned policies (par etc.) is currently lacking.
Unless the best design for it is straightforward based on the existing backend patterns, it might be worth opening an RFC for the design discussion.
I will open a RFC. No, it will not fit into existing patterns efficiently, but I have a tentative plan, so an RFC seems correct here.
https://github.com/oneapi-src/oneDPL/pull/1930 I've added an RFC for discussion.