Add new file service ingestion flow.

src/dags/libs/constants.py

src/dags/libs/exceptions.py

src/dags/libs/handle_file.py

src/dags/libs/process_manifest_r3.py

src/dags/libs/source_file_check.py

src/plugins/operators/process_manifest_r3.py

.../plugin-unit-tests/data/workProduct/SeismicTraceData.json

...-unit-tests/data/workProduct/record_SeismicTraceData.json

tests/plugin-unit-tests/test_file_handler.py

tests/plugin-unit-tests/test_file_upload.py

tests/plugin-unit-tests/test_manifest_processor_r3.py

tests/plugin-unit-tests/test_operators_r3.py

tests/unit_tests.sh