Removes smilies from existence. (kinda) (#5649)

Content.Server/Chat/Managers/IChatSanitizationManager.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.Chat.Managers;
+
+public interface IChatSanitizationManager
+{
+    public void Initialize();
+
+    public bool TrySanitizeOutSmilies(string input, IEntity speaker, out string sanitized, [NotNullWhen(true)] out string? emote);
+}