ecommerce integration3 flutter pos2 laravel pos2 pos addon2 quickro pos2 retail software2 whatsapp storefront2 account management1 application1 business automation1 business management1 business tools1 catalog sharing1 chat commerce1 client management1 crm1 inventory management1 invoice management1 laravel1 material design1 mobile storefront1 multi store1 online ordering1 online payment1 payment gateways1 paypal1 pdf management1 pos system1 product service1 realtime sync1