Mid Round Antagonist Overhaul + Antagonist Roundstart Tweaks and Bugfixes

[BurgerBB]

https://github.com/Aurorastation/Aurora.3/pull/5792

[Flamingo]

I like this. It makes it easier on admins who have to remove traitor status from people early on, and then go around trying to find another willing participant. 

[Itanimulli]

Finally some good fucking food

[ben10083]

I like it, only thing I don't like is allowing 3-4 changlings to always spawn in changeling rounds, and I also feel that the min should at least decrease to 2. 

[PoZe]

Pr was closed, project discontinued