prs-fleshgolem-2070: feat: sqlalchemy 2.0 (#2096)

* upgrade sqlalchemy to 2.0

* rewrite all db models to sqla 2.0 mapping api

* fix some importing and typing weirdness

* fix types of a lot of nullable columns

* remove get_ref methods

* fix issues found by tests

* rewrite all queries in repository_recipe to 2.0 style

* rewrite all repository queries to 2.0 api

* rewrite all remaining queries to 2.0 api

* remove now-unneeded __allow_unmapped__ flag

* remove and fix some unneeded cases of "# type: ignore"

* fix formatting

* bump black version

* run black

* can this please be the last one. okay. just. okay.

* fix repository errors

* remove return

* drop open API validator

---------

Co-authored-by: Sören Busch <fleshgolem@gmx.net>

tests/unit_tests/services_tests/scraper_tests/test_cleaner_parts.py

@@ -256,7 +256,6 @@ ingredients_test_cases = (
 
 @pytest.mark.parametrize("ingredients", ingredients_test_cases, ids=(x.test_id for x in ingredients_test_cases))
 def test_cleaner_clean_ingredients(ingredients: CleanerCase):
-
     if ingredients.exception:
         with pytest.raises(ingredients.exception):
             cleaner.clean_ingredients(ingredients.input)