I didn't have the time to implement it. I really thought I could make it because it is such a simple thing.
But then I thought no I'm tired I want to sleep and woke up half an hour after the deadline. ¯\_(ツ)_/¯
If you are on Windows you can go to %Appdata%/Godot/app_userdata/BulbNRun/levelfiles you can copy the file.