I'm trying to add a button in the products when adding them in the inventory, the role of it is to scan the product barcode and assign the value to the barcode field, i found out that i need to use odoo javascript framework, i found out some tutorials that were extending poscomponent, idk from where they got this name and from where can i get the one for the product.template. and is it possible to do that ?, like creating a new button that execute some javascript (i'll be using Quagga )