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-web/backoffice/src/services/invoices.service.ts

@@ -59,7 +59,7 @@ export const invoicesService = {
       .then((r) => r.data);
   },
 
-  /** Finance worklist: USD invoices awaiting bank-transfer confirmation. */
+  /** Finance worklist: USD and ETB invoices awaiting manual payment confirmation. */
   listOfflineUsd(
     filter: InvoiceListFilter,
   ): Promise<PaginatedOfflineUsdInvoices> {
@@ -70,7 +70,7 @@ export const invoicesService = {
       .then((r) => r.data);
   },
 
-  /** Confirm a USD invoice paid by bank transfer — the slip file is required. */
+  /** Confirm an invoice (USD or ETB) paid manually — the slip file is required. */
   confirmOffline(id: string, file: File, reference?: string): Promise<Invoice> {
     const body = new FormData();
     body.append("file", file);