- Add DTOs for tax switch operations including payloads and results.
- Create SalesInvoiceFiscalSwitchService to handle sending and retrieving tax data.
- Implement SalesInvoiceFiscalService for managing invoice tax submissions and results persistence.
- Develop NamaTaxSwitchAdapter for interfacing with the external tax service.
- Introduce NamaTaxRequestDto and related classes for structured tax requests.
