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/modules/sales-invoices/sales-invoices.controller.ts

@@ -0,0 +1,32 @@
+import { Controller, Delete, Get, Param } from '@nestjs/common'
+import { SalesInvoicesService } from './sales-invoices.service'
+
+@Controller('sales-invoices')
+export class SalesInvoicesController {
+  constructor(private readonly service: SalesInvoicesService) {}
+
+  // @Post()
+  // create(@Body() dto: CreateSalesInvoiceDto) {
+  //   return this.service.create(dto)
+  // }
+
+  @Get()
+  findAll() {
+    return this.service.findAll()
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.service.findOne(Number(id))
+  }
+
+  // @Patch(':id')
+  // update(@Param('id') id: string, @Body() dto: UpdateSalesInvoiceDto) {
+  //   return this.service.update(Number(id), dto)
+  // }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.service.remove(Number(id))
+  }
+}