refactor(admin): 修改商品列表字段名称

- 将"采购价"改为"供货价"
- 添加"商户"字段（VIP价格）

app/admin/lists/store_product/StoreProductLists.php

@@ -236,8 +236,9 @@ class StoreProductLists extends BaseAdminDataLists implements ListsSearchInterfa
             'unit_name' => '单位',
             'store_info' => '规格',
             'stock' => '库存',
-            'purchase' => '采购价',
+            'purchase' => '供货价',
             'cost' => '商户',
+            'vip_price' => '商户',
             'price' => '零售',
             'rose' => '毛利率',
             'bar_code' => '条码',