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/pos/pos.controller.ts

@@ -1,5 +1,4 @@
-import { Body, Controller, Get, Param, Post, Query } from '@nestjs/common'
-import { CreateSaleInvoiceDto } from './dto/create-pos.dto'
+import { Controller, Get, Param, Query } from '@nestjs/common'
 import { PosService } from './pos.service'
 
 @Controller('pos')
@@ -32,9 +31,4 @@ export class PosController {
   async getProductCategories(@Param('posId') posId: string) {
     return this.posService.getProductCategories(Number(posId))
   }
-
-  @Post('/:posId/orders/create')
-  async createOrder(@Param('posId') posId: string, @Body() dto: CreateSaleInvoiceDto) {
-    return this.posService.createOrder(Number(posId), dto)
-  }
 }