transform core api codes into this project, update modules as admin/pos context modules

src/modules/pos/sales-invoices/sales-invoices.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common'
+import { SalesInvoicesController } from './sales-invoices.controller'
+import { SalesInvoicesService } from './sales-invoices.service'
+
+@Module({
+  controllers: [SalesInvoicesController],
+  providers: [SalesInvoicesService],
+})
+export class PosSalesInvoicesModule {}