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/Pathfinders/PathfindingArgs.cs

@@ -0,0 +1,41 @@
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+
+namespace Content.Server.GameObjects.EntitySystems.AI.Pathfinding.Pathfinders
+{
+    public struct PathfindingArgs
+    {
+        public EntityUid Uid { get; }
+        public int CollisionMask { get; }
+        public TileRef Start { get; }
+        public TileRef End { get; }
+        // How close we need to get to the endpoint to be 'done'
+        public float Proximity { get; }
+        // Whether we use cardinal only or not
+        public bool AllowDiagonals { get; }
+        // Can we go through walls
+        public bool NoClip { get; }
+        // Can we traverse space tiles
+        public bool AllowSpace { get; }
+
+        public PathfindingArgs(
+            EntityUid entityUid,
+            int collisionMask,
+            TileRef start,
+            TileRef end,
+            float proximity = 0.0f,
+            bool allowDiagonals = true,
+            bool noClip = false,
+            bool allowSpace = false)
+        {
+            Uid = entityUid;
+            CollisionMask = collisionMask;
+            Start = start;
+            End = end;
+            Proximity = proximity;
+            AllowDiagonals = allowDiagonals;
+            NoClip = noClip;
+            AllowSpace = allowSpace;
+        }
+    }
+}