[Bug]: Allows adding unlimited number of products - stop customer proceeding with checkout when there is an out-of-stock/quantity product in cart

[GuillaumeDgr]

Actual Behavior

VSF quantities are not linked with prestashop back-office, I can add unlimited quantity for one product even if there is only one unit of this product left on the back office.

What version of PrestaShop integration are you using?

1.7.8.3

What version of Node.js are you using?

16.14.2

What browser (and version) are you using?

Mozilla Firefox Developers

What operating system (and version) are you using?

macOS

[samberrry]

Cart error handling feature: https://github.com/vuestorefront-community/prestashop/pull/85

Will be added in v1.2.0