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/GameObjects/EntitySystems/AI/Pathfinding/GraphUpdates/CollisionChange.cs

@@ -0,0 +1,16 @@
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Server.GameObjects.EntitySystems.AI.Pathfinding.GraphUpdates
+{
+    public class CollisionChange : IPathfindingGraphUpdate
+    {
+        public IEntity Owner { get; }
+        public bool Value { get; }
+
+        public CollisionChange(IEntity owner, bool value)
+        {
+            Owner = owner;
+            Value = value;
+        }
+    }
+}