Add categories on product data

[giorgiopogliani]

Hello, I am not sure this is the best way to do it but with this new param all the product categories are available. Also, it will be possible to create breadcrumbs on product page.

[samberrry]

@giorgiopogliani Hello, thanks for your contribution. Please change your base branch from master to develop, thank you

[samberrry]

@giorgiopogliani it's a nice contribution, as it's necessary. Please take a look at this: https://github.com/PrestaShop/PrestaShop/blob/7f739ee0bc0917e86babc321a804dda99c901064/controllers/front/ProductController.php#L1308

this is how the Core is building breadcrumbs, so let us just copy that :) I changed it, and pushed.