[libcxx][modularisation] moves <utility> content out of <type_traits>
Moves:
* `std::move`, `std::forward`, `std::declval`, and `std::swap` into
`__utility/${FUNCTION_NAME}`.
* `std::swap_ranges` and `std::iter_swap` into
`__algorithm/${FUNCTION_NAME}`
Differential Revision: https://reviews.llvm.org/D103734
NOKEYCHECK=True
GitOrigin-RevId: 6adbc83ee9e46b476e0f75d5671c3a21f675a936
diff --git a/include/thread b/include/thread
index 09a1f02..acfc20b 100644
--- a/include/thread
+++ b/include/thread
@@ -87,6 +87,8 @@
#include <__functional_base>
#include <__mutex_base>
#include <__threading_support>
+#include <__utility/__decay_copy.h>
+#include <__utility/forward.h>
#include <chrono>
#include <cstddef>
#include <functional>