Complete the implementation of SYCL device interface

[diptorupd]

There are several gap in dpctl's implementation of SYCL's device class functions as specified in SYCL 2020 spec. This ticket is aimed at addressing those gaps:

• Implement wrappers in C API and Python API for all device descriptor information types. We currently have implementations for some of the information types e.g., DPCTLDevice_GetDriverInfo, DPCTLDevice_GetMaxComputeUnits. Implement wrappers in C API and Python API for device descriptor information types #286
• Fix function names: Have consistent naming of functions for SYCL, C, and Python API functions #284
• Implement support for sub-devices. Implement support for sub-devices #290 SYCL has three create_sub_devices functions and we should support all three:
  • DPCTLDevice_CreateSubDevicesEqually
  • DPCTLDevice_CreateSubDevicesByCounts
  • DPCTLDevice_CreateSubDevicesByAffinityDomain
• Implement get_backend (proposed name DPCTLDevice_GetBackend()) Implement get_backend, get_platform, get_backend_info #291
• Implement get_platform (proposed name DPCTLDevice_GetPlatform()) Implement get_backend, get_platform, get_backend_info #291
• Implement get_backend_info (proposed name DPCTLDevice_GetBackendInfo()) Implement get_backend, get_platform, get_backend_info #291
• Support for aspects Support for aspects #292
  • Add aspects as a new enum class (DPCTLSyclAspect) to dpctl_sycl_enum_types.h
  • Maybe implemented as bool DPCTLDevice_Has(DPCTLSyclAspect A) in C API and cpdef has(aspect=*) in Cython?
• Improve the print info functions Improve the print info functions #293
  • The device print info functions in both C and Python should support printing all info and aspects.
  • The functions should have a "less" option to limit the amount of descriptors that are printed. By default, the less option should be turned on and only print a limited set of information (maybe restrict to what the functions print currently)
• Improve the __repr__ function of SyclDevice class. (TBD) Improve the __repr__ function of SyclDevice class #294
• Add docstrings and tests Add docstrings and tests #295
  • Gtest for C-API
  • Pytest for Python API
• API documentation
  • Add a table in dpctl's documentation comparing which SYCL classes and functions are supported #233

[diptorupd]

Closing as most tasks are complete.