[FEA]: Unify versioning macros

[jrhemstad]

Is this a duplicate?

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Area

General CCCL

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

I would like all of the relevant version macros across libcudacxx/thrust/cub to use a consistent source of truth.

Describe the solution you'd like

Tasks

Beta Give feedback

1. Decide where to put the CCCL version definition
2. Add CCCL_VERSION macro
3. Update THRUST_VERSION to alias CCCL_VERSION
4. Update CUB_VERSION to alias CCCL_VERSION
5. [FEA]: Define public version macros for libcudacxx #372
   feature request +1
6. Update LIBCUDACXX_VERSION to use CCCL_VERSION

I'm not sure where we would put the header that contains CCCL_VERSION. cccl/cccl/version.h would be an obvious choice, but the top level cccl/ is not part of the include path when linking against our cmake targets.

Describe alternatives you've considered

No response

Additional context

No response

[jrhemstad]

Closed by #652