PrestaShop 8 Free-Shipping Module

I’m looking to add a small but essential feature to my PrestaShop 8 store: the option to flag one or more specific products so they always ship for free. Here’s what I need: • A fully installable, PrestaShop 8-compatible module that lets me select individual products in the back-office and mark them as “Free Shipping.” • At checkout the module must automatically set the shipping cost of those marked items to €0, without affecting normal rates for everything else. • The change should work seamlessly