feat:添加主图预览功能

src/views/goods/infoSet.vue

@@ -98,6 +98,7 @@
                       :href="compositeImageSrc"
                       :style="{'background-image': `url(${compositeImageSrc})`}"
                       class="image" />
+                    <img v-if="goodsParams.topImage && !compositeImageSrc" :src="goodsParams.topImage" class="topImage">
                   </div>
                 </div>
 
@@ -904,6 +905,10 @@ export default {
                 display: inline-block;
 
               }
+              .topImage {
+                width: auto;
+                height: 130px;
+              }
             }
           }