feat: add settlement_type to SalesInvoice model and related DTOs

- Added settlement_type field to SalesInvoice model with ENUM values (CASH, CREDIT, MIXED).
- Updated SalesInvoice aggregate types, input types, and where filters to include settlement_type.
- Modified StatisticsService to calculate credit amounts based on settlement_type.
- Enhanced TspProviderOriginalSendPayloadDto to include settlement_type.
- Updated NamaProvider DTOs and utility functions to handle new settlement_type logic.
- Created migration to add settlement_type column to sales_invoices table and backfill existing records.

src/generated/prisma/enums.ts

@@ -249,6 +249,15 @@ export const ConsumerType = {
 export type ConsumerType = (typeof ConsumerType)[keyof typeof ConsumerType]
 
 
+export const InvoiceSettlementType = {
+  CASH: 'CASH',
+  CREDIT: 'CREDIT',
+  MIXED: 'MIXED'
+} as const
+
+export type InvoiceSettlementType = (typeof InvoiceSettlementType)[keyof typeof InvoiceSettlementType]
+
+
 export const TspProviderType = {
   NAMA: 'NAMA',
   SUN: 'SUN'