Adds /me command. (#414)

* Adds /me command.

* Update Content.Server/Chat/ChatManager.cs

Co-Authored-By: Pieter-Jan Briers <pieterjan.briers@gmail.com>

Content.Server/GameObjects/Components/Mobs/SpeciesComponent.cs

@@ -102,6 +102,11 @@ namespace Content.Server.GameObjects
             return CurrentDamageState.CanSpeak();
         }
 
+        bool IActionBlocker.CanEmote()
+        {
+            return CurrentDamageState.CanEmote();
+        }
+
         List<DamageThreshold> IOnDamageBehavior.GetAllDamageThresholds()
         {
             var thresholdlist = DamageTemplate.DamageThresholds;