Shitty combat mode & animations. (#367)

* Combat mode UI & targeting zones.

* Fix inventory hud positioning.

* Crappy attack animations.

* Import TG combat sounds

* More work on arcs.

* Implement hit sounds.

* Lunging, hit effects, some more stuff.

Content.Shared/GameObjects/EntitySystemMessages/CombatModeSystemMessages.cs

@@ -0,0 +1,32 @@
+using System;
+using Content.Shared.GameObjects.Components.Mobs;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.EntitySystemMessages
+{
+    public static class CombatModeSystemMessages
+    {
+        [Serializable, NetSerializable]
+        public sealed class SetTargetZoneMessage : EntitySystemMessage
+        {
+            public SetTargetZoneMessage(TargetingZone targetZone)
+            {
+                TargetZone = targetZone;
+            }
+
+            public TargetingZone TargetZone { get; }
+        }
+
+        [Serializable, NetSerializable]
+        public sealed class SetCombatModeActiveMessage : EntitySystemMessage
+        {
+            public SetCombatModeActiveMessage(bool active)
+            {
+                Active = active;
+            }
+
+            public bool Active { get; }
+        }
+    }
+}