ProductBarcode: add image downloading from remote product database

- Backend download images from the database
- Frontend retrieve the image as base64, no architecture change needed

frontend/components/Item/CreateModal.vue

@@ -315,6 +315,16 @@
         {
           form.name = active.params.item.name;
           form.description = active.params.item.description;
+
+          if(active.params.imageURL)
+          {
+            form.photos.push({
+                    photoName: "product_view.jpg",
+                    fileBase64: active.params.imageBase64,
+                    primary: form.photos.length === 0,
+                    file: dataURLtoFile(active.params.imageBase64 ,"product_view.jpg")
+                  });
+          }
         }
 
         if (labelId.value) {