Shortcut to open the last saved file in any editor

[cibinmathew]

Feature Request

Make the saved filepath available for other commands so that it can be used to open them with user's choice editor. May be an environment variable like TMUX_LOGGING_LAST_SAVED_FILE can be added or some other option

https://github.com/tmux-plugins/tmux-logging/blob/b5c5f7b9bc679ca161a442e932d6186da8d3538f/scripts/save_complete_history.sh#L8-L16