Feat: New components to show SKUs inside the bundle on the checkout summary.

[acasazza]

Template example

<LineItem type="bundles">
   <LineItemName />
  <LineItemBundleSkus>
      <LineItemBundleSkuField attribute="code" />
      <LineItemBundleSkuField
          tagElement="img"
          attribute="image_url"
          width={86}
      />
      <LineItemBundleSkuField attribute="quantity" />
 </LineItemBundleSkus>
</LineItem>