Add codespell on CI

.pre-commit-config.yaml

README.md

arkindex/dataimport/api.py

arkindex/dataimport/management/commands/import_s3.py

arkindex/dataimport/models.py

arkindex/dataimport/providers.py

arkindex/dataimport/serializers/imports.py

arkindex/dataimport/serializers/workers.py

arkindex/dataimport/tests/test_imports.py

arkindex/dataimport/tests/test_workeractivity.py

arkindex/dataimport/tests/test_workerruns.py

arkindex/dataimport/tests/test_workers.py

arkindex/documents/api/elements.py

arkindex/documents/date_parser.py

arkindex/documents/deletion.py

arkindex/documents/migrations/0006_preflight.py

...nts/migrations/0034_transcriptionentity_worker_version.py

arkindex/documents/serializers/entities.py

arkindex/documents/serializers/ml.py

arkindex/documents/tests/test_corpus_elements.py