Add unit pricing measure to product XML generation in feeds.cjs. Updated Product, ProductDetailPage, and AddToCartButton components to support new pricing fields (fGrundPreis, cGrundEinheit) for compliance with German regulations. Enhanced SearchBar with enter icon functionality for improved user experience.

src/components/AddToCartButton.js

@@ -51,6 +51,8 @@ class AddToCartButton extends Component {
         seoName: this.props.seoName,
         pictureList: this.props.pictureList,
         price: this.props.price,
+        fGrundPreis: this.props.fGrundPreis,
+        cGrundEinheit: this.props.cGrundEinheit,
         quantity: 1,
         weight: this.props.weight,
         vat: this.props.vat,