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

Content.Server/Speech/EntitySystems/MouseAccentSystem.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using Content.Server.Speech.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Random;
+
+namespace Content.Server.Speech.EntitySystems
+{
+    // TODO: Code in-game languages and make this a language
+    public class MouseAccentSystem : EntitySystem
+    {
+        [Dependency] private readonly IRobustRandom _random = default!;
+
+        private static readonly IReadOnlyList<string> Squeek = new List<string>{ "Squeak!", "Piep!", "Chuu!" };
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<MouseAccentComponent, AccentGetEvent>(OnAccent);
+        }
+
+        public string Accentuate(string message)
+        {
+            // TODO: Maybe add more than one squeek when there are more words?
+            return _random.Pick(Squeek);
+        }
+
+        private void OnAccent(EntityUid uid, MouseAccentComponent component, AccentGetEvent args)
+        {
+            args.Message = Accentuate(args.Message);
+        }
+    }
+}