[Shared] Add exit command as an alias to quit

[Razish]

I can't tell you how many times I've tried to close a server with exit like most other CLI programs, interpreters, shells etc.

Quality of life for a goober like me ✨

[Razish]

Note there's a slight QoL decrease because ex<TAB> no longer completes to exec 🤔
I'll leave this to the masses to decide which is better.

[bartrpe]

"exec" is a command used, in general, by slightly more experienced players so not having it on full auto-completion is less of a hindrance than adding the common "console-killer command" imo.

[Razish]

We could also argue that ex<TAB> for exec is only saving 1 keystroke (c). Not likely to end the world.

[taysta]

We could also argue that ex<TAB> for exec is only saving 1 keystroke (c). Not likely to end the world.

Maybe over the top but in my fork I added a cvar for the exit command, default to on. I advised the few who complained about it interrupting their exec muscle memory to disable the exit command with the cvar.

[Razish]

I guess that works, but it's not worth the additional complexity to me.
We go all-in or we don't add it at all IMO.