Add support for output entities in CSV configuration

[tendai-zw]

• Added support for output entity types to existing codebase
  

• Updated TRANSFORMS_CSV_HEADER constant to include new outputEntities field
  

• Updated TransformCsvLine named tuple to include new output_entities field
  

• Updated _create_transforms_config method to include output_entities field in list of transformed values
  

• Updated test_transform_to_csv method to assert output_entities field in TransformCsvLine named tuple matches expected output entities
  

Change allows for output entity types to be included in output CSV when generating transforms configuration

[crest42]

Does default to True anyway