Refactor AccentManager to be an entity system, makes accents ECS. (#4825)

Content.Server/Speech/EntitySystems/BackwardsAccentSystem.cs

@@ -0,0 +1,26 @@
+using System;
+using Content.Server.Speech.Components;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.Speech.EntitySystems
+{
+    public class BackwardsAccentSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<BackwardsAccentComponent, AccentGetEvent>(OnAccent);
+        }
+
+        public string Accentuate(string message)
+        {
+            var arr = message.ToCharArray();
+            Array.Reverse(arr);
+            return new string(arr);
+        }
+
+        private void OnAccent(EntityUid uid, BackwardsAccentComponent component, AccentGetEvent args)
+        {
+            args.Message = Accentuate(args.Message);
+        }
+    }
+}