Create `metabase.permissions.util` namespace (#37177)

...box/query_processor/middleware/row_level_restrictions.clj

src/metabase/models/collection.clj

src/metabase/models/permissions.clj

src/metabase/models/query/permissions.clj

src/metabase/permissions/util.clj

src/metabase/search/config.clj

test/metabase/api/card_test.clj

test/metabase/models/permissions_group_test.clj

test/metabase/models/permissions_test.clj

test/metabase/permissions/util_test.clj