SYCL Symbol Visibility Issue on Windows, main branch (2024.08.03.)

[krasznaa]

While doing some tests on Windows with the latest version of the code, I ran into the following warnings during the build:

...
[ 70%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/memory/memory_resource_base.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 71%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/memory/device_memory_resource.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 71%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/memory/host_memory_resource.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 71%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/memory/shared_memory_resource.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 72%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/utils/sycl/copy.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 72%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/utils/sycl/async_copy.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 73%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/utils/sycl/queue_wrapper.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 73%] Building SYCL object sycl/CMakeFiles/vecmem_sycl.dir/src/utils/sycl/get_queue.sycl.obj
icx-cl: warning: unknown argument ignored in clang-cl: '-fvisibility-ms-compat' [-Wunknown-argument]
[ 73%] Linking SYCL shared library ..\bin\vecmem_sycl.dll
...

So, #282's setup is not working perfectly with this combination of compilers. (MSVC + oneAPI) The failure is not fatal, but it would be nice to get rid of these warnings... 🤔