Blocked: Re-create relational fields on Directus

- `store_id` to `store`
- `product_id` to `product`
- `customer_id` to `customer`
- `sale_id` to `sale`

Any other `*_id` field present in the Directus instance.

The field cannot be renamed. We need to create a new one, and once it's all good, then remove the old one.