/fk directive overrides INT data type to number

This Quick SQL:
```
test
  foo_id int /nn /fk foo
```

Yields this SQL:
```sql
create table test (
    id        number generated by default on null as identity
              constraint test_id_pk primary key,
    foo_id    number
              constraint test_foo_id_fk
              references foo not null
);
```

Note that `foo_id` is a `number`, not an `int` as defined.