687c89c3e1
- Added salePrice field to Product model in Prisma schema and generated files. - Updated Product scalar field enums in both TypeScript files. - Modified aggregate output types to include salePrice. - Enhanced input types for creating and updating products to support salePrice. - Updated migration file to add salePrice column to Products table. - Created DTOs for inventory management in POS module. - Implemented POS controller and service with methods for stock and product categories.