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/Components/Mobs/SharedCombatModeComponent.cs

@@ -0,0 +1,27 @@
+using System;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Mobs
+{
+    public abstract class SharedCombatModeComponent : Component
+    {
+        public sealed override uint? NetID => ContentNetIDs.COMBATMODE;
+        public override string Name => "CombatMode";
+        public sealed override Type StateType => typeof(CombatModeComponentState);
+
+        [Serializable, NetSerializable]
+        protected sealed class CombatModeComponentState : ComponentState
+        {
+            public bool IsInCombatMode { get; }
+            public TargetingZone TargetingZone { get; }
+
+            public CombatModeComponentState(bool isInCombatMode, TargetingZone targetingZone)
+                : base(ContentNetIDs.COMBATMODE)
+            {
+                IsInCombatMode = isInCombatMode;
+                TargetingZone = targetingZone;
+            }
+        }
+    }
+}