groceries: Lidl importer (online range), Dirk importer + store row, generic per-store GTIN backfill

drizzle/20261025183905_groceries_store_dirk/migration.sql

@@ -0,0 +1,4 @@
+-- Dirk van den Broek (dirk.nl). Lidl's row already exists.
+INSERT INTO "groceries"."stores" ("slug", "name", "website", "color", "sort_order") VALUES
+	('dirk', 'Dirk', 'https://www.dirk.nl', '#d6001c', 70)
+ON CONFLICT ("slug") DO NOTHING;