add worker_run_id on publication fields and in cache

arkindex_worker/cache.py

arkindex_worker/worker/classification.py

arkindex_worker/worker/element.py

arkindex_worker/worker/entity.py

arkindex_worker/worker/metadata.py

arkindex_worker/worker/transcription.py

tests/test_cache.py

tests/test_elements_worker/test_classifications.py

tests/test_elements_worker/test_elements.py

tests/test_elements_worker/test_entities.py

tests/test_elements_worker/test_metadata.py

tests/test_elements_worker/test_transcriptions.py