Product fetcher (datafetcher redesign)

apps/cli/executables/datafetcher/ARCHITECTURE.md

.../cli/executables/datafetcher/datafetcher/alma_db_utils.py

.../executables/datafetcher/datafetcher/redesign/__init__.py

...xecutables/datafetcher/datafetcher/redesign/exceptions.py

...xecutables/datafetcher/datafetcher/redesign/fetch_plan.py

...ables/datafetcher/datafetcher/redesign/fetcher_factory.py

.../executables/datafetcher/datafetcher/redesign/fetchers.py

...xecutables/datafetcher/datafetcher/redesign/interfaces.py

...executables/datafetcher/datafetcher/redesign/locations.py

.../cli/executables/datafetcher/datafetcher/redesign/ngas.py

...ables/datafetcher/datafetcher/redesign/product_fetcher.py

...xecutables/datafetcher/datafetcher/redesign/validators.py

apps/cli/executables/datafetcher/setup.cfg

apps/cli/executables/datafetcher/setup.py

...xecutables/datafetcher/tests/redesign/test_fetch_plans.py

...tables/datafetcher/tests/redesign/test_fetcher_factory.py

...i/executables/datafetcher/tests/redesign/test_fetchers.py

.../executables/datafetcher/tests/redesign/test_locations.py

apps/cli/executables/datafetcher/tests/redesign/test_ngas.py

...tables/datafetcher/tests/redesign/test_product_fetcher.py