Shopware plugin for functions addon

Hello everyone, we require a plugin for Shopware. Please do NOT apply if you don't have experience with shopware. ([login to view URL]) For further understanding please refer to this page [login to view URL] (This page is in german language. Please use google translate or equivalent for translation) Please put any two products from this shop to the cart. Within the cart you are able to add additional delivery options or warranty options for every product (Zusatzoptionen jetzt gleich mitbuchen) We require a similar functionality for our Shopware shop. In the cart the customer shall be able to select delivery-options for every product. If a delivery option is selected the default shipping-costs shall be free - unless there is a product in the cart that doesn't have a delivery-option selected