feat: implement POS order management system

- Added CreateOrderDto and CreateOrderItemDto for order creation.
- Developed PosOrdersController to handle order-related endpoints.
- Created PosOrdersService for business logic related to orders.
- Implemented PosOrdersWorkflow for order processing workflows.
- Established Prisma integration for database operations in orders.
- Introduced SalesInvoicesModule and related DTOs for sales invoice management.
- Enhanced SalesInvoicesService and SalesInvoicesWorkflow for invoice processing.

src/app.module.ts

@@ -12,6 +12,7 @@ import { CardexModule } from './modules/cardex/cardex.module'
 import { InventoriesModule } from './modules/inventories/inventories.module'
 import { PosModule } from './modules/pos/pos.module'
 import { PurchaseReceiptsModule } from './modules/purchase-receipts/purchase-receipts.module'
+import { SalesInvoicesModule } from './modules/sales-invoices/sales-invoices.module'
 import { StatisticsModule } from './modules/statistics/statistics.module'
 import { SuppliersModule } from './modules/suppliers/suppliers.module'
 import { PrismaModule } from './prisma/prisma.module'
@@ -20,8 +21,6 @@ import { ProductCategoriesModule } from './product-categories/product-categories
 import { ProductVariantsModule } from './product-variants/product-variants.module'
 import { ProductsModule } from './products/products.module'
 import { RolesModule } from './roles/roles.module'
-import { SalesInvoiceItemsModule } from './sales-invoice-items/sales-invoice-items.module'
-import { SalesInvoicesModule } from './sales-invoices/sales-invoices.module'
 import { StockAdjustmentsModule } from './stock-adjustments/stock-adjustments.module'
 import { StockBalanceModule } from './stock-balance/stock-balance.module'
 import { StockMovementsModule } from './stock-movements/stock-movements.module'
@@ -42,7 +41,6 @@ import { UsersModule } from './users/users.module'
     InventoriesModule,
     PurchaseReceiptsModule,
     SalesInvoicesModule,
-    SalesInvoiceItemsModule,
     InventoryTransfersModule,
     InventoryTransferItemsModule,
     StockMovementsModule,