1.新增商品出入库成本价计算

2.新增后台商品列表接口，支持共享库存sku展示

eladmin-system/src/main/java/cn/ysk/cashier/pojo/product/TbProduct.java

@@ -320,6 +320,10 @@ public class TbProduct implements Serializable {
     @ApiModelProperty("库存数量")
     private Integer stockNumber;
 
+    @Column(name = "`total_cost_price`")
+    @ApiModelProperty(value = "总成本价")
+    private BigDecimal totalCostPrice = BigDecimal.ZERO;
+
 
     public void copy(TbProduct source){
         BeanUtil.copyProperties(source,this, CopyOptions.create().setIgnoreNullValue(true));

eladmin-system/src/main/java/cn/ysk/cashier/pojo/product/TbProductSku.java

@@ -139,4 +139,8 @@ public class TbProductSku implements Serializable {
     @Column(name = "`is_pause_sale`")
     @ApiModelProperty(value = "是否暂停销售")
     private Integer isPauseSale = 0;
+
+    @Column(name = "`total_cost_price`")
+    @ApiModelProperty(value = "总成本价")
+    private BigDecimal totalCostPrice = BigDecimal.ZERO;
 }