Add utility AI (#806)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>
Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Server/AI/Utility/AiLogic/PathingDummy.cs

@@ -0,0 +1,18 @@
+using Content.Server.AI.Utility.BehaviorSets;
+using JetBrains.Annotations;
+using Robust.Server.AI;
+
+namespace Content.Server.AI.Utility.AiLogic
+{
+    [AiLogicProcessor("PathingDummy")]
+    [UsedImplicitly]
+    public sealed class PathingDummy : UtilityAi
+    {
+        public override void Setup()
+        {
+            base.Setup();
+            BehaviorSets.Add(typeof(PathingDummyBehaviorSet), new PathingDummyBehaviorSet(SelfEntity));
+            SortActions();
+        }
+    }
+}