refactor ingest CLI for better code reuse #7634

Job	Run time
changelog	7s
setup (3.8)	2m 37s
setup (3.9)	2m 23s
setup (3.10)	2m 38s
setup (3.11)	2m 46s
shellcheck	10s
check-deps (3.8)	4m 27s
lint (3.8)	1m 1s
check-deps (3.9)	5m 26s
lint (3.9)	1m 3s
check-deps (3.10)	5m 4s
lint (3.10)	1m 7s
check-deps (3.11)	4m 4s
lint (3.11)	1m 6s
test_unstructured_api_unit (3.8)	59s
test_unit_no_extras (3.8)	2m 1s
test_unit (3.8)	20m 6s
test_ingest (3.8)	16m 52s
test_unit (3.9)	20m 18s
test_dockerfile	27m 34s
test_ingest (3.9)	17m 3s
test_unit (3.10)	24m 43s
test_ingest (3.10)	27m 9s
test_unit (3.11)	20m 28s
test_ingest (3.11)	17m 31s
test_unit_dependency_extras (3.8, csv)	2m 24s
test_unit_dependency_extras (3.8, docx)	4m 7s
test_unit_dependency_extras (3.8, odt)	2m 44s
test_unit_dependency_extras (3.8, markdown)	2m 52s
test_unit_dependency_extras (3.8, pypandoc)	2m 55s
test_unit_dependency_extras (3.8, msg)	3m 19s
test_unit_dependency_extras (3.8, pdf-image)	13m 6s
test_unit_dependency_extras (3.8, pptx)	2m 41s
test_unit_dependency_extras (3.8, xlsx)	2m 23s
	4h 25m 14s

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