Add AutoEmote comp/system, updates to zombie code (#13932)

* Add AutoEmote comp/system

* Reduce groan chance so it's the same as before

Old code did 0.2 and then 0.5, now it's just one Prob(0.1)

* Fix typo, curTime var, don't log Resolve

* Maybe fix pausing?

* Fix mistake

* Update NextEmoteTime if an auto emote is removed

* Fix stuff

Get CurTime outside update loop
Use MapInit instead of ComponentInit
Fix a typo in a comment
Debug assert prototype ID in RemoveEmote
Do += PausedTime in OnUnpaused
Add prototype as arg to ResetTimer to avoid an indexing

Content.Server/Zombies/ZombifyOnDeathSystem.cs

@@ -4,7 +4,6 @@ using Content.Server.Disease.Components;
 using Content.Server.Body.Components;
 using Content.Server.Atmos.Components;
 using Content.Server.Nutrition.Components;
-using Robust.Shared.Player;
 using Content.Server.Popups;
 using Content.Server.Speech.Components;
 using Content.Server.Body.Systems;
@@ -29,7 +28,6 @@ using Content.Shared.Humanoid;
 using Content.Shared.Mobs;
 using Content.Shared.Movement.Systems;
 using Content.Shared.Weapons.Melee;
-using Robust.Shared.Audio;
 
 namespace Content.Server.Zombies
 {