platform additions

Signed-off-by: fufesou <shuanglongchen@yeah.net>

src/flutter.rs

@@ -509,6 +509,7 @@ impl InvokeUiSession for FlutterHandler {
                 ("features", &features),
                 ("current_display", &pi.current_display.to_string()),
                 ("resolutions", &resolutions),
+                ("platform_additions": &pi.platform_additions),
             ],
         );
     }