Exceptions handling

The FaceSDK interface throws nested exceptions.
The top of stack of nested exceptions is always face_sdk::exception.
Use face_sdk::format_exception() function for building info message with the chain of nested exceptions stack.
Use face_sdk::rethrow_root_exception() function for throwing the bottom of nested exceptions stack.

List of all exceptions:

• runtime_exception
  - internal_error_exception
  - out_of_range_exception
  - invalid_parameter_exception
  - file_exception
  - file_not_found_exception
  - bad_image_data_exception
  - bad_image_format_exception
  - signature_mismatch_exception
  - incompatible_version_exception
  - version_not_available_exception
  - key_not_found_exception
  - key_exists_exception
  - data_container_corrupted_exception
  - data_container_entries_limit_exceed_exception
  - not_implemented_exception
  - license_exception
  - nvml_exception
  - platofrm_not_supported_exception
  - not_supported_exception
  - upscale_too_much_exception