Clean up Thrust includes. (#1011)

## Description

This PR cleans up some `#include`s for Thrust. This is meant to help ease the transition to Thrust 1.16 when that is updated in rapids-cmake.

## Context

I opened a PR rapidsai/cudf#10489 that updates cuDF to Thrust 1.16. Notably, Thrust reduced the number of internal header inclusions:
> [#1572](NVIDIA/thrust#1572) Removed several unnecessary header includes. Downstream projects may need to update their includes if they were relying on this behavior.

I spoke with @robertmaynard and he recommended making similar changes to clean up includes ("include what we use," in essence) to make sure we have compatibility with future versions of Thrust across all RAPIDS libraries.

It looks like rmm may be able to build with Thrust 1.16 even without these changes, but I think this changeset may help prevent future problems arising from inconsistency and reliance on `detail` headers.

Authors:
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Mark Harris (https://github.com/harrism)
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Conor Hoekstra (https://github.com/codereport)

URL: #1011

benchmarks/device_uvector/device_uvector_bench.cu

@@ -15,7 +15,6 @@
  */
 
 #include "../synchronization/synchronization.hpp"
-#include "thrust/detail/raw_pointer_cast.h"
 
 #include <rmm/cuda_stream.hpp>
 #include <rmm/detail/error.hpp>
@@ -30,6 +29,9 @@
 
 #include <cuda_runtime_api.h>
 
+#include <thrust/device_vector.h>
+#include <thrust/memory.h>
+
 #include <cstdio>
 #include <type_traits>
 

include/rmm/mr/device/thrust_allocator_adaptor.hpp

@@ -19,8 +19,9 @@
 #include <rmm/mr/device/device_memory_resource.hpp>
 #include <rmm/mr/device/per_device_resource.hpp>
 
-#include <thrust/detail/type_traits/pointer_traits.h>
 #include <thrust/device_malloc_allocator.h>
+#include <thrust/device_ptr.h>
+#include <thrust/memory.h>
 
 namespace rmm::mr {
 /**

tests/mr/device/thrust_allocator_tests.cu

@@ -23,6 +23,8 @@
 
 #include <gtest/gtest.h>
 
+#include <thrust/reduce.h>
+
 // explicit instantiation for test coverage purposes
 template class rmm::mr::thrust_allocator<int>;