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/modules/tspProviders/dto/provider-switch.dto.ts

@@ -5,6 +5,7 @@ import {
 } from '@/common/services/saleInvoices/sale-invoice-create.dto'
 import {
   CustomerType,
+  InvoiceSettlementType,
   InvoiceTemplateType,
   PaymentMethodType,
   TspProviderRequestType,
@@ -208,6 +209,10 @@ export class TspProviderOriginalSendPayloadDto {
   @ApiProperty({ required: true })
   @IsString()
   tsp_token: string
+
+  @ApiProperty({ required: true, enum: InvoiceSettlementType })
+  @IsEnum(InvoiceSettlementType)
+  settlement_type: InvoiceSettlementType
 }
 
 export class TspProviderSendItemResultDto {