Handle workers activity update depending on process status

arkindex_worker/worker/__init__.py

arkindex_worker/worker/base.py

tests/conftest.py

tests/test_base_worker.py

tests/test_elements_worker/__init__.py

tests/test_elements_worker/test_classifications.py

tests/test_elements_worker/test_cli.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

tests/test_elements_worker/test_worker.py