feat(model-manager): add model manager

Author: betterdancing

designer-demo/src/configurators/common/ModelSelect.vue

@@ -1,7 +1,5 @@
 import MyInputConfigurator from './MyInputConfigurator.vue'
-import ModelConfigurator from './model-configurator/ModelConfigurator.vue'
 
 export const configurators = {
-  MyInputConfigurator,
-  ModelConfigurator
+  MyInputConfigurator
 }