Deprecations for CCCL 2.8

[bernhardmgruber]

• Replace cub::Int2Type by cuda::std::integral_constant and deprecate the former #3640
• Deprecate cub::RegBoundScaling and cub::MemBoundScaling #3663
• Deprecate cub::Trait::CATEGORY|PRIMITIVE|NULL_TYPE #3689
• Replace use of thrust::identity by cuda::std::identity #2762
• Deprecate cub::AliasTemporaries #3678
• Internalize cub::PolicyWrapper #3680
• Internalize cub::KernelConfig #3682
• Deprecate cub::FpLimits in favor of cuda::std::numeric_limits #3635
• Internalize triple_chevron #3648
• Internalize cuda/detail/core/* #3505
• AgentSegmentFixup, which was only used by cub::DeviceSpmv #3590
• Replace uses of CUB_IS_INT128_ENABLED by a CCCL macro and deprecate it #3403
• Deprecate thrust logical meta functions #3538
• Extend cuda::std::numeric_limits for __half, __nv_bfloat16, __nv_fp8_e4m3, __nv_fp8_e5m2 #3349
• THRUST_TUNING_ARCH Deprecate macros from cuda/detail/core/util.h #3504
• Deprecate CUB iterators which exist in Thrust or libcu++ #3261
• Deprecate thrust macros from type_deduction.h #3501
• Deprecate thrust event, future and more #3457
• Deprecate and replace thrust::cuda_cub iterators #3422
• Move CUB tunings and policy hubs to a detail namespace #3405
• Move all entities in cub/[block|warp]/specializations into a detail namespace #3409
• Deprecate a few CUB macros #3456
• Move CUB agents to internal namespace #3303
• Replace and deprecate thrust::cuda_cub::terminate #3421
• Deprecate and replace cub::min/max by cuda::std::min/max #3404
• Redefine and deprecate thrust::remove_cvref #3394
• Deprecate thrust::optional #3306
• Deprecate thrust::numeric_limits #3366
• Review and deprecate features from CUB util_ptx.cuh #3289
• Deprecate thrust::async #100
• Deprecate thrust::null_type #3367
• Deprecate cub::DeviceSpmv #896
• Deprecate cub::IterateThreadStore #3337
• Deprecate cub::Swap #3333
• Deprecate Thrust's cpp_compatibility.h macros #3299
• [FEA]: Deprecate GridBarrier and GridBarrierLifetime #1389