[new feature] Sku: update style & add several props (#3875)

src/sku/README.md

@@ -120,9 +120,11 @@ export default {
 | v-model | Whether to show sku | `boolean` | `false` |
 | sku | Sku data | `object` | - |
 | goods | Goods info | `object` | - |
-| goods-id | Goods id | `string | number` | - |
+| goods-id | Goods id | `string | `number` | - |
+| price-tag | Tag behind the price | `string` | - |
 | hide-stock | Whether to hide stock | `boolean` | `false` |
 | hide-quota-text | Whether to hide quota text | `boolean` | `false` |
+| hide-selected-text | Whether to hide selected text | `boolean` | `false` |
 | show-add-cart-btn | Whether to show cart button | `boolean` | `true` |
 | buy-text | Buy button text | `string` | - | - |
 | add-cart-text | Add cart button text | `string` | - | - |
@@ -263,7 +265,13 @@ customStepperConfig: {
         Toast('not enough stock');
       }
     }
-  }
+  },
+  // custom callback when stepper value change
+  handleStepperChange: currentValue => {},
+  // stock
+  stockNum: 1999,
+  // stock fomatter
+  stockFormatter: stockNum => {},
 }
 ```