feat：商品添加

src/views/mallManagement/goods/goods_add/index.vue

@@ -723,6 +723,7 @@ export default {
       this.specList[index].goodsName = item.goodsName;
       this.specList[index].specsName = item.specsName;
       this.specList[index].unit = item.unit;
+      this.specList[index].costAmount = item.costAmount;
       this.specList[index].stockQty = item.stockQty;
     },