[FEA]: CCCL should have a single source of truth for version number

[jrhemstad]

Is this a duplicate?

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Area

General CCCL

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

As a maintainer and user of CCCL, for consistency and reliability, I would like to have a single source of truth for the version information.

These versions are currently defined independently as defined here: https://github.com/nvidia/cccl#api-versioning

Describe the solution you'd like

Define a uniform set of version numbers exposed via <cuda/version>:

#define CCCL_VERSION 2003007 // Example version 2.3.7 (MMMmmmppp)
#define CCCL_MAJOR_VERSION (CCCL_VERSION / 1000000)
#define CCCL_MINOR_VERSION (CCCL_VERSION / 1000 % 1000)
#define CCCL_PATCH_VERSION (CCCL_VERSION % 1000)

Derive the other version numbers from these values (note that Thrust/CUB use MMMmmmpp vs MMMmmmppp, so it requires some extra calculation):

// libcudacxx/include/cuda/std/detail/__config
#define _LIBCUDACXX_CUDA_API_VERSION CCCL_VERSION
#define _LIBCUDACXX_CUDA_API_VERSION_MAJOR CCCL_MAJOR_VERSION
#define _LIBCUDACXX_CUDA_API_VERSION_MINOR CCCL_MINOR_VERSION
#define _LIBCUDACXX_CUDA_API_VERSION_PATCH CCCL_PATCH_VERSION

// thrust/thrust/version.h
#include <cuda/version>
#define THRUST_VERSION (CCCL_MAJOR_VERSION * 100000 + CCCL_MINOR_VERSION * 100 + CCCL_PATCH_VERSION)
#define THRUST_MAJOR_VERSION CCCL_MAJOR_VERSION
#define THRUST_MINOR_VERSION CCCL_MINOR_VERSION
#define THRUST_SUBMINOR_VERSION CCCL_PATCH_VERSION

// cub/cub/version.cuh
#include "cuda/version"
#define CUB_VERSION (CCCL_MAJOR_VERSION * 100000 + CCCL_MINOR_VERSION * 100 + CCCL_PATCH_VERSION)
#define CUB_MAJOR_VERSION CCCL_MAJOR_VERSION
#define CUB_MINOR_VERSION CCCL_MINOR_VERSION
#define CUB_SUBMINOR_VERSION CCCL_PATCH_VERSION

Describe alternatives you've considered

No response

Additional context

No response