Add slot for "default panels" in View Product

so custom apps can override the full set if needed

src/components/products/ByjoveProduct.vue

@@ -30,6 +30,8 @@
       <img :src="product.image_url" />
     </div>
 
+    <slot name="default-panels" :product="product">
+
     <b-collapse class="card"
                 animation="slide"
                 :open="false"
@@ -127,6 +129,8 @@
       </div>
     </b-collapse>
 
+    </slot>
+
     <slot name="extra-panels" :product="product"></slot>
 
   </byjove-model-crud>