[Chapel Merge] Move the GpuSort Module code into the GPU module

Branch: refs/heads/main
Revision: 1a7cc90e8542bab2665ac70e3fdfdf257a40bca6
Author: ShreyasKhandekar
Link: Move the GpuSort Module code into the GPU module by ShreyasKhandekar · Pull Request #23989 · chapel-lang/chapel · GitHub
Log Message:
Move the GpuSort Module code into the GPU module (#23989)

In order to avoid creating more standard modules, move the
GpuSort.sort functionality into the GPU module.
And to also avoid polluting the with duplicates, rename sort to
gpuSort.

[Reviewed by @e-kayrakli thanks!]

Compare: Comparing 170519dd7f5e0d4a7a1a738a2f313cad4e35cbad...f54ff680e82cb0c7e7618cbdacde7d6dedfe1753 · chapel-lang/chapel · GitHub

Diff:
M modules/standard/GPU.chpl
D modules/standard/GpuSort.chpl
M test/gpu/native/studies/sort/radixSortGpu.chpl
M test/gpu/native/studies/sort/sortTest.chpl
https://github.com/chapel-lang/chapel/pull/23989.diff