feat(mapping_tree)：mapping_tree 类型

models/Example1.json

@@ -70,6 +70,11 @@
             "type": "text"
             "type": "text"
           },
           },
           {
           {
+            "label": "file",
+            "property": "file",
+            "type": "multi_file"
+          },
+          {
             "label": "status",
             "label": "status",
             "property": "status",
             "property": "status",
             "type": "number"
             "type": "number"