add exam properties

examcloud-core-examwork-starter/src/main/resources/exam-properties.xml

@@ -336,4 +336,10 @@
         <desc>交卷冻结时间类型</desc>
         <valueType>STRING</valueType>
     </enum>
+    <enum>
+        <id>57</id>
+        <name>SHOW_MULTIPLE_CHOICE_WARNING</name>
+        <desc>是否在学生端作答多选题所选答案不足2个时警告提示</desc>
+        <valueType>BOOLEAN</valueType>
+    </enum>
 </enums>