feature (db): Add support for multi-column PKs (#1658)

internal/db/schema/migrations/oss/postgres/19/01_db.up.sql

@@ -0,0 +1,56 @@
+begin;
+
+create table if not exists db_test_accessory (
+  accessory_id bigint generated always as identity primary key,
+  create_time wt_timestamp,
+  update_time wt_timestamp,
+  description text not null
+);
+
+create trigger 
+  update_time_column 
+before 
+update on db_test_accessory 
+  for each row execute procedure update_time_column();
+
+create trigger 
+  immutable_columns
+before
+update on db_test_accessory
+  for each row execute procedure immutable_columns('create_time');
+
+create trigger 
+  default_create_time_column
+before
+insert on db_test_accessory
+  for each row execute procedure default_create_time();
+
+
+create table if not exists db_test_scooter_accessory (
+  accessory_id bigint references db_test_accessory(accessory_id),
+  scooter_id bigint references db_test_scooter(id),
+  create_time wt_timestamp,
+  update_time wt_timestamp,
+  review text,
+  primary key(accessory_id, scooter_id)
+);
+
+create trigger 
+  update_time_column 
+before 
+update on db_test_scooter_accessory 
+  for each row execute procedure update_time_column();
+
+create trigger 
+  immutable_columns
+before
+update on db_test_scooter_accessory
+  for each row execute procedure immutable_columns('create_time');
+
+create trigger 
+  default_create_time_column
+before
+insert on db_test_scooter_accessory
+  for each row execute procedure default_create_time();
+
+commit;