[SYCL][Bindless] Add external_mem_handle_type::dma_buf

[ProGTX]

• Add support for importing dma_buf handles into SYCL
• Add supports_importing_handle_type that checks whether a device supports importing an external memory handle type. This is because dma_buf is only supported on L0 backend for now.
• Updated Bindless Images extension document
• Updated "Example 6" E2E test to use dma_buf handle
• Updated buffer_usm Vulkan interop E2E test to use dma_buf handle if the both the Vulkan driver and the device backend supports it
• Added overload of get_ur_handles that only takes a SYCL device