Add idempotency key for addons table (#1403)

Author: jakubno

packages/db/migrations/20251026192416_addons_idempotency.sql

@@ -0,0 +1,12 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE public.addons ADD COLUMN idempotency_key text;
+CREATE UNIQUE INDEX addons_idempotency_key_uidx
+    ON public.addons(idempotency_key) WHERE idempotency_key IS NOT NULL;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP INDEX addons_idempotency_key_uidx;
+ALTER TABLE public.addons DROP COLUMN idempotency_key;
+-- +goose StatementEnd