Merging WS-543-continue-refactoring

...s/pexable/ingest_envoy/ingest_envoy/ingestion_manifest.py

...le/ingest_envoy/ingest_envoy/ingestion_manifest_writer.py

...xecutables/pexable/ingest_envoy/ingest_envoy/launchers.py

.../pexable/ingest_envoy/ingest_envoy/manifest_components.py

...xecutables/pexable/ingest_envoy/ingest_envoy/utilities.py

apps/cli/executables/pexable/ingest_envoy/test/conftest.py

.../pexable/ingest_envoy/test/examples/MANIFEST_EVLA_EB.json

...pexable/ingest_envoy/test/examples/Manifest_ALMA_AOI.json

...pexable/ingest_envoy/test/examples/Manifest_ALMA_Cal.json

.../pexable/ingest_envoy/test/examples/Manifest_ALMA_EB.json

...pexable/ingest_envoy/test/examples/Manifest_EVLA_Cal.json

...ble/ingest_envoy/test/examples/Manifest_Realfast_SDM.json

.../ingest_envoy/test/examples/Manifest_VLASS_QUICKLOOK.json

...exable/ingest_envoy/test/examples/quicklook_manifest.json

...ables/pexable/ingest_envoy/test/test_evla_cal_manifest.py

...executables/pexable/ingest_envoy/test/test_manifest_if.py

...pexable/ingest_envoy/test/test_miscellaneous_manifests.py