Enhance manual payment processing for USD and ETB invoices

- Updated API documentation and summaries to reflect support for both USD and ETB invoices.
- Modified data structures to include trade direction for invoices.
- Adjusted UI components to accommodate manual payment confirmations and display relevant information.
- Implemented filtering options for currency in the manual payments worklist.

apps/edr-freight-api/src/modules/billing/dto/filter-invoice.dto.ts

@@ -39,4 +39,11 @@ export class FilterInvoiceDto {
   @IsOptional()
   @IsIn(Object.values(Freight.InvoiceStatus))
   status?: Freight.InvoiceStatus;
+
+  /** Manual-payments worklist only: restrict to one currency. */
+  @ApiPropertyOptional({ enum: ["USD", "ETB"] })
+  @IsOptional()
+  @Transform(({ value }: { value: unknown }) => String(value).toUpperCase())
+  @IsIn(["USD", "ETB"])
+  currency?: "USD" | "ETB";
 }