Speech and Emoting components (#3075)

* Add Speech and Emoting components.

* makesentient gives you speech and emoting abilities.

* Ghosts do *not* need a SpeechComponent.

* I hate you all, and I hate shared code as well.

Content.Shared/GameObjects/Components/Mobs/Speech/SharedSpeechComponent.cs

@@ -0,0 +1,36 @@
+using Content.Shared.GameObjects.EntitySystems.ActionBlocker;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Mobs.Speech
+{
+    /// <summary>
+    ///     Component required for entities to be able to speak.
+    /// </summary>
+    [RegisterComponent]
+    public class SharedSpeechComponent : Component, IActionBlocker
+    {
+        private bool _enabled = true;
+        public override string Name => "Speech";
+
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                if (_enabled == value) return;
+                _enabled = value;
+                Dirty();
+            }
+        }
+
+        bool IActionBlocker.CanSpeak() => Enabled;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(this, x => x.Enabled, "enabled", true);
+        }
+    }
+}