feat: allow admins to auto grant APIs to CIMD clients (#1692)

backend/resources/migrations/sqlite/20260814120000_api_client_access.down.sql

@@ -0,0 +1,9 @@
+PRAGMA foreign_keys=OFF;
+BEGIN;
+
+DROP TABLE IF EXISTS oidc_clients_allowed_apis;
+ALTER TABLE api_permissions DROP COLUMN allowed_for_cimd_clients;
+ALTER TABLE apis DROP COLUMN allow_cimd_clients;
+
+COMMIT;
+PRAGMA foreign_keys=ON;