New "export Data"

Hello,

I want to either create a new "export data" option or be able to modify an existing one.

In Export Data > Orders > Order Items, I want to be able to add a field for Billing Zipcode but I don't have any available fields.

Is there an easy way I can add Billing Zipcode into the available fields, or create a new "Order Items" with the Billing Zipcode option?

You should extend the following schema

app/schemas/exim/order_items.php