feat: products#221 - JSON LD structure data for products

quiqqer/products/src/QUI/ERP/Products/Controls/Products/Product.html

@@ -4,6 +4,8 @@
 <article>
     {template_event name="quiqqer::products::product::begin" Product=$Product}
 
+    {$jsonLd}
+
     <div class="grid-50 mobile-grid-100 grid-parent product-gallery">
         {control control="QUI\TemplateCologne\Controls\ProductGallery" Product=$Product}
     </div>