fix: 添加customer.js，修复stock.js参数

src/api/stock.js

@@ -22,14 +22,14 @@ export default {
    * 入库
    */
   stockIn(data) {
-    return api.request('/stock/in', 'POST', null, data)
+    return api.request('/stock/in', 'POST', data)
   },
 
   /**
    * 库存调整
    */
   adjustStock(data) {
-    return api.request('/stock/adjust', 'POST', null, data)
+    return api.request('/stock/adjust', 'POST', data)
   },
 
   /**