added asset_editors.py example

Author: Roberto De Ioris

examples/asset_editors.py

@@ -0,0 +1,6 @@
+import unreal_engine as ue
+
+for _asset in ue.get_all_edited_assets():
+    editor = ue.find_editor_for_asset(_asset)
+    print('{0} - {1}'.format(editor.get_editor_name(), editor.get_last_activation_time()))
+    editor.focus_window()