Please add default settings for sale_invoice_policy on the contact company

[drzaphod85]

Is your feature request related to a problem?
The sale_invoice_policy is a good module but I missing a way to set the default behaviour on the customer company so that when ever a new offer/order is created the default value from the res.partner company is set.

Describe the solution you'd like
The should be a setting in the company "Sales & Purchase" tab where you can set the default value for the customer, When a new offer is created the setting will be fetched from the customer settings and set on the offer as standard.

Describe alternatives you've considered
As far as I can see non today.

Additional context
As this is a very good feature that is missing from Odoo today it would be nice to be able to make a setting for each new customer.

[drzaphod85]

I have actually made this changes my self and would like to offer them back to the community if there is any interest for it. As I am very new to this I am wondering how to contribute with the code back to you. I have only updated for Odoo 16 so far but will see it may work for 17 as well.