Move ChatSystem.Emotes to shared (#40866)

* move to shared

* entity effect to shared

* refactor: whitespaces+xml-doc typo fixups

* refactor: a little bit more of xml-doc typos fixups

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Co-authored-by: pa.pecherskij <pa.pecherskij@interfax.ru>

Content.Server/Zombies/ZombieSystem.cs

@@ -10,6 +10,7 @@ using Content.Shared.Anomaly.Components;
 using Content.Shared.Armor;
 using Content.Shared.Bed.Sleep;
 using Content.Shared.Cloning.Events;
+using Content.Shared.Chat;
 using Content.Shared.Damage;
 using Content.Shared.Humanoid;
 using Content.Shared.Inventory;