Changes

Add `kokkos_swap(Array<T, N>)` sepcialization

Specializing the swap algorithm for Kokkos arrays was initially proposed
in #6697 but we dropped it to focus on the Kokkos swap ADL ordeal.
Somehow we overlooked a stray <Kokkos_Swap.hpp> header include in the
Kokkos::Array header file.  This PR reintroduce a
`Kokkos::kokkos_swap(Kokkos::Array)` specialization, following closely
what the standard library does for `std::swap(std::array)`.

kokkos_swap(Array) member friend should not be templated on some other type U

Co-Authored-By: Maarten Arnst <maarten.arnst@uliege.be>

Fix noexcept specification for kokkos_swap on zero-sized arrays

Co-authored-by: Nevin Liber <nliber@anl.gov>

Replace deprecated sycl::device_ptr/sycl::host_ptr

Introduce alias based on feature macro

Kokkos::Impl::SYCLTypes:: -> Kokkos::Impl::sycl_

Fix wrong macro guards for deprecated Kokkos::pair<T1,void> specialization

Co-Authored-By: Nicolas Morales <nmmoral@sandia.gov>

#6805: add initial converting constructor from mdspan to view

#6805: some formatting fixes

#6805: guard mdspan conversion test

#6805: fix host function call from device and fix more cuda warnings in mdspan

#6805: fix more formatting

#6805: fix constraints on mdspan converting constructor and allow runtime-unmanaged (but compile-time managed) views to be constructed from mdspans

#6805: make mdspan helpers namespace consistent

#6805: add conversion to mdspan

#6805: add to_mdspan

#6805: fix formatting and update tests

#6805: more formatting fixes

#6805: fixes to strided layout and more tests

#6805: fixe compilation with nvcc

#6805: various formatting fixes and cleanup

#6805: clean up implementation slightly

#6805: fix rebase artifact

#6805: add more test types

#6805: fix unused type

Fix more unused types

#6805: fix insufficient array size for strides

#6805: new method for getting strides from ViewOffset

#6805: remove stray character

#6805: address some initial PR comments

#6805: fix dependency on ExecutionSpace template parameter

#6805: move MDSpan impl from Kokkos::Experimental::Impl->Kokkos::Impl

#6805: move dimension_from_extent

#6805: fix formatting

Remove unused functions and structs

Introduce KOKKOS_IMPL_CONDITIONAL_EXPLICIT macro for use in View

Add default accessor_type to to_mdspan funciton

Improve test and fix for C++20 where we need an additional ctor

This explicit construction:
View<int[8]> a(mdspan<int,dextents<int,1>>(ptr,8))
needs the new ctor, because the mdspan provided is not implicitly
convertible to the natural mdspan type.

Fix clang-format

address some more reviewer comments

#6805: fix array overrun bug in stride conversion function

#6805: fix unused parameter on 0 size views

#6805: disable clang formatting for usage of maybe_unused as it gives incorrect C++

#6805: address PR feedback in test

#6805: fix namespace in test

#6805: move test out of subdirectory

#6805: arrange test alphabetically

#6805: fix test

#6805: use the extent value for constructing static extents in layouts rather than 0

#6805: remove dimension_from_extent as it is not used anymore

#6805: fix formatting

#6805: switch out conditionally explicit macro for explicit check on C++ version and a comment

#6805: fix constraints on implicit mdspan conversion and test for undesirable implicit conversions

#6805: add test for reproducing padding issue

#6805: use strides for layout_left_padded and layout_right_padded