Added the ability to switch between files when creating Data Model

Author: YevhenZvieriev

src/com/magento/idea/magento2plugin/actions/generation/dialog/NewDataModelDialog.java

@@ -96,7 +96,7 @@ public NewDataModelDialog(
         this.properties = new ArrayList<>();
 
         setContentPane(contentPanel);
-        setModal(true);
+        setModal(false);
         setTitle(NewDataModelAction.ACTION_DESCRIPTION);
         getRootPane().setDefaultButton(buttonOK);