[SYCL][Driver][NFC] Reorganize SYCL based options (#14979)

The SYCL based options in the Options.td table were a bit scattered
about. Reorganize the options to be in a more centralized area, allowing
for a more general adaptation of using sycl_Group. Items within
sycl_Group will automatically be allowed for Windows and Linux command
lines.

Some test cleanup involving some expected warnings have also been
addressed, either due by proper enabling for Windows or improper warning
expectations.

Author: mdtoguchi