新增退出时机表，完成投资报告页面接口

src/main/java/com/sztzjy/fund_investment/controller/UserController.java

@@ -183,10 +183,11 @@ public class UserController {
             return null;
         }
         performanceScoreMapper.deleteByExample(example);
-        flow.setFlowId(IdUtil.simpleUUID());
+        String id = IdUtil.simpleUUID();
+        flow.setFlowId(id);
         flowMapper.updateByPrimaryKey(flow);
 
-        return new ResultEntity(HttpStatus.OK, "已重新实训！");
+        return new ResultEntity(HttpStatus.OK, "已重新实训！",id);
     }