[UR] Stop querying adapter fp16/fp64 support via extension.

[aarongreig]

We're trying to move the UR adapters away from returning hard coded OpenCL extension strings to report device capabilities, this is the first change in that direction.

Closes oneapi-src/unified-runtime#1374

Not a member of llvm-reviewers-runtime anymore, need someone else re-approve.

[aelovikov-intel]

Please don't add extra methods. Existing interfaces should be enough, just change their implementation to the proper calls to the underlying UR queries.

[aelovikov-intel]

This relied on the internal caching of the extensions string, we need to ensure that new underlying query is cached too. See

llvm/sycl/source/detail/device_impl.hpp

Lines 2265 to 2301 in 76a887e

	mutable JointCache<
	UREagerCache<UR_DEVICE_INFO_TYPE, UR_DEVICE_INFO_USE_NATIVE_ASSERT,
	UR_DEVICE_INFO_EXTENSIONS>, //
	URCallOnceCache<UR_DEVICE_INFO_NAME,
	// USM:
	UR_DEVICE_INFO_USM_DEVICE_SUPPORT,
	UR_DEVICE_INFO_USM_HOST_SUPPORT,
	UR_DEVICE_INFO_USM_SINGLE_SHARED_SUPPORT,
	UR_DEVICE_INFO_USM_CROSS_SHARED_SUPPORT,
	UR_DEVICE_INFO_USM_SYSTEM_SHARED_SUPPORT,
	//
	UR_DEVICE_INFO_ATOMIC_64>, //
	EagerCache<InfoInitializer>, //
	CallOnceCache<InfoInitializer,
	ext::oneapi::experimental::info::device::architecture>, //
	AspectCache<EagerCache, aspect::fp16, aspect::fp64,
	aspect::int64_base_atomics, aspect::int64_extended_atomics,
	aspect::ext_oneapi_atomic16>,
	AspectCache<
	CallOnceCache,
	// Slow, >100ns (for baseline cached ~30..40ns):
	aspect::ext_intel_pci_address, aspect::ext_intel_gpu_eu_count,
	aspect::ext_intel_free_memory, aspect::ext_intel_fan_speed,
	aspect::ext_intel_power_limits,
	// medium-slow, 60-90ns (for baseline cached ~30..40ns):
	aspect::ext_intel_gpu_eu_simd_width, aspect::ext_intel_gpu_slices,
	aspect::ext_intel_gpu_subslices_per_slice,
	aspect::ext_intel_gpu_eu_count_per_subslice,
	aspect::ext_intel_device_info_uuid,
	aspect::ext_intel_gpu_hw_threads_per_eu,
	aspect::ext_intel_memory_clock_rate,
	aspect::ext_intel_memory_bus_width,
	aspect::ext_oneapi_bindless_images,
	aspect::ext_oneapi_bindless_images_1d_usm,
	aspect::ext_oneapi_bindless_images_2d_usm,
	aspect::ext_oneapi_is_composite, aspect::ext_oneapi_is_component>>
	MCache;