Update to CCCL 3.0

[bdice]

Description

Update to CCCL 3.0.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.
• The cmake-format.json is up to date with these changes.
• I have added new files under rapids-cmake/
  • I have added include guards (include_guard(GLOBAL))
  • I have added the associated docs/ rst file and update the api.rst

[PointKernel]

It might be worthwhile to include cuco in the test suite alongside other RAPIDS projects like cuDF, RAFT, etc., since many issues with newer versions of CCCL have been effectively caught by cuco's unit tests.

[bdice]

/merge