[clang] [llvm] [libsycl][Driver] Move and rename the SYCL shared library (PR #188770)

[Alexey Bader via llvm-commits]

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bader wrote:

```suggestion
      message(FATAL_ERROR "libLLVMSYCL requires a DLL version of the MSVC CRT.")
```

https://github.com/llvm/llvm-project/pull/188770