Is your feature request related to a problem? Please describe.
I have often hard drive that i need to run long session of badblocks, often 40h+ session, i have a lot of shortcut on my mmorpg mouse and the mouse's in the bed where i sleep with my desktop, sometime, when handling my mouse to move it back when i wake or return in bed, i press the wrong shortcut and close terminator or press the x button on the taskbar when trying to switch screen session.

Describe the solution you'd like
I saw some 10yo post about an edit of a python 2 script of the terminator behavior for a closing prompt, which sadly python 2's not supported anymore for a while. Would it be possible to add the feature for a prompt if multiple windows tab or session are open and if at least a command's being run live in the terminal. I don't expect it to be too complicated to add.

Describe alternatives you've considered
Off course i could simply foreground/background each application to be sure they won't quit when i accidently press the wrong button, but that would not be conveniant.

Additional context
Since 2+ post on google give result about an edited python 2 script for terminator to add that behavior, i don't expect it to be too complicated to add.

I thank you for your great work, it's my favorite terminal emulator and i don't expect to try terminal hoping anytime soon, It's perfect when you need to do so much on a single screen.