L4Vo5

Add option to sort script list by recency

6

Closes https://github.com/godotengine/godot-proposals/issues/8125 Added "Last Viewed" option to text_editor/script_list/sort_scripts_by. I put it after "None", which looks strange, so that it's backwards compatible. Also added an EditorSetting called `last_viewed_script_threshold`. A selected script...