[SYCL][PI] Add PI_ERROR_UNSUPPORTED_FEATURE error code

[steffenlarsen]

This commit adds a new error code to PI as a mapping from UR_RESULT_ERROR_FEATURE_UNSUPPORTED.

This relates to oneapi-src/unified-runtime#1448.

[KornevNikita]

Thanks Steffen! Just thought if we can make this error more clearer.
Just to notice - It looks like there are much more places where we can use this error-code instead of PI_ERROR_INVALID_OPERATION, e.g.:
https://github.com/intel/llvm/blob/sycl/sycl/source/detail/sycl_mem_obj_t.hpp#L273
https://github.com/intel/llvm/blob/sycl/sycl/source/detail/device_impl.cpp#L197
https://github.com/intel/llvm/blob/sycl/sycl/source/detail/scheduler/commands.cpp#L2319
and so on.

[steffenlarsen]

Thanks Steffen! Just thought if we can make this error more clearer. Just to notice - It looks like there are much more places where we can use this error-code instead of PI_ERROR_INVALID_OPERATION, e.g.: https://github.com/intel/llvm/blob/sycl/sycl/source/detail/sycl_mem_obj_t.hpp#L273 https://github.com/intel/llvm/blob/sycl/sycl/source/detail/device_impl.cpp#L197 https://github.com/intel/llvm/blob/sycl/sycl/source/detail/scheduler/commands.cpp#L2319 and so on.

I agree that they could be replaced with the new error code, but I intentionally left them untouched as they are using deprecated exceptions and should be changed to using sycl::exception, which doesn't take a PI error code.

[steffenlarsen]

@intel/dpcpp-nativecpu-pi-reviewers - Friendly ping.

[PietroGhg]

Native CPU lgtm, thank you