This update integrates Viettel SInvoice, a key requirement for Vietnamese e-invoicing, directly into the Point of Sale (PoS) module. It allows businesses to automatically generate and attach the necessary electronic invoices for transactions, streamlining compliance with Vietnamese regulations. The changes improve the system's ability to handle PoS sales and invoices accurately.

Add Viettel SInvoice integration with the Point of Sale module to support PoS e-invoicing for the Vietnamese market.

task-4844619

Forward-Port-Of: odoo/odoo#245672