feat: add order buy

wfc-modules/wfc-system/src/main/java/org/wfc/system/domain/UPackage.java

@@ -35,7 +35,7 @@ public class UPackage extends BaseData {
     private Integer periodNum;
 
     @Schema(description = "有效期类型")
-    private String periodType;
+    private Integer periodType;
 
     @Schema(description = "价格")
     private BigDecimal price;