[SYCL][Doc] Bindless Images proposal revision 4 (#9842)

Replaces #8307

Required for #9808 and
#10112 .

Addressed some of the feedback on revision 3 as revision 4. Any larger
changes will need to move to subsequent revisions.

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Co-authored-by: Przemek Malon <[email protected]>
Co-authored-by: Isaac Ault <[email protected]>
Co-authored-by: Sean Stirling <[email protected]>
Co-authored-by: Duncan Brawley <[email protected]>

Author: 5 people