fix: 表单checkbox样式无效

tduck-project/src/main/java/com/tduck/cloud/project/entity/struct/CheckboxExpandStruct.java

@@ -19,6 +19,16 @@ public class CheckboxExpandStruct {
      */
     private Integer max;
 
+    /**
+     * 选项类型
+     */
+    private String optionType;
+
+    /**
+     * 选项是按钮时大小
+     */
+    private String size;
+
     /**
      * 选项
      */