rt9391

Results 2 issues of rt9391

Add a new sort type "script modified time", and some refactoring. ![image](https://github.com/OrigamiDev-Pete/TODO_Manager/assets/91177204/07c15304-f1e5-4d57-902d-356ca21ba00c) ![image](https://github.com/OrigamiDev-Pete/TODO_Manager/assets/91177204/29b481f8-9191-47ee-b20a-c8ab7195458b)

reason: better management, I have too much "TODO".