考试时间，题数写活

管理端新增商品

src/main/java/com/peanut/modules/common/entity/ClassModel.java

@@ -27,6 +27,10 @@ public class ClassModel {
 
     private Integer examDays;//考试周时长
 
+    private String examProportion;//考试题型比例
+
+    private Integer examTime;//考试时长分钟
+
     private Integer isQuestion;
     private Integer questionScore;
     private Integer isTask;