added global emote CVars

[Nettingman]

Added CVar settings for user defined custom emotes.
Requirement of other PR.

[PJB3005]

Why is this in its own PR?

[Nettingman]

Isn't it how I should submit them?
PRs with engine changes page says it should be submitted first and then referenced in the main PR:
https://docs.spacestation14.com/en/general-development/tips/prs-with-engine-changes.html

Sorry this is my first PR with engine change, I may have misunderstood something.

[PJB3005]

I didn't realize this is in Robust, which begs the next question: why is this in Robust?

[Nettingman]

Because it's a new CVar. I was following the pattern of other user settings which all had their own CVars.

[PJB3005]

You can define the new CVars in content with CCVars.cs.

[Nettingman]

Oh damn, I see. Thank you. This can be closed then.