AI pickup changes (#1811)

* AI pickup changes

Eating and drinking isn't spammed anymore.
AI can do InRangeUnobstructed checks for item pickups.
AI can open drink cans.

AI littering to be coded.

* #nullable enable

* github's nullable fails are actively shortening my lifespan

* Use a const instead

So it's easier to find given the performance implications.

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/EntitySystems/AI/Steering/GridTargetSteeringRequest.cs

@@ -14,7 +14,12 @@ namespace Content.Server.GameObjects.EntitySystems.AI.Steering
         /// <inheritdoc />
         public float PathfindingProximity { get; }
 
-        public GridTargetSteeringRequest(GridCoordinates targetGrid, float arrivalDistance, float pathfindingProximity = 0.5f)
+        public bool RequiresInRangeUnobstructed { get; }
+
+        public float TimeUntilInteractionCheck { get; set; } = 0.0f;
+
+
+        public GridTargetSteeringRequest(GridCoordinates targetGrid, float arrivalDistance, float pathfindingProximity = 0.5f, bool requiresInRangeUnobstructed = false)
         {
             // Get it once up front so we the manager doesn't have to continuously get it
             var mapManager = IoCManager.Resolve<IMapManager>();
@@ -22,6 +27,7 @@ namespace Content.Server.GameObjects.EntitySystems.AI.Steering
             TargetGrid = targetGrid;
             ArrivalDistance = arrivalDistance;
             PathfindingProximity = pathfindingProximity;
+            RequiresInRangeUnobstructed = requiresInRangeUnobstructed;
         }
     }
 }