Feature Request: add key binding to "backup done" dialog

[Romansh]

When MakeMKV finishes backing up a disc, it displays a "backup done" dialog.

Currently, it has to be closed by clicking on "OK" via the mouse cursor; hitting return has no effect.
It would be nice if the dialog could be closed using the return key.

Or is the OK button bound to another key?
I must admit I didn't try other keys such as Space etc.

[Chetwood]

Having an option to start a program would be nice too.