[Feature Request]Exit function

[Manmade290]

Maybe we can add an exit option in global settings which makes it more complete. I have finished this part by using present code and doesn' t change too much in strcture.

[SubhamTyagi]

What is the purpose of this exit function?

[Manmade290]

What is the purpose of this exit function?

This add an exit option in global setting, while you cannot close this app in normal way but to use home button.