Interface PostgresQueryResult<R>

This interface is the subset of pg driver's Result shape that kysely needs.

We don't use the type from pg here to not have a dependency to it.

interface PostgresQueryResult<R> {
    command:
        | "UPDATE"
        | "DELETE"
        | "INSERT"
        | "SELECT"
        | "MERGE"
        | "COMMIT"
        | "ROLLBACK";
    rowCount: number;
    rows: R[];
}