Intentions generation/filtering

[edofiore]

• Agent should take the parcels that are along the path
• Agent should deliver parcels if there is a delivery zone along the path
• Store the nearest/farthest tiles from a specific tile (and maybe also the paths): e.g., when an agent delivers parcels and he has no idea where to go, because no parcels are perceived, we could store the farthest spawn tiles from that delivery tile, so that the next time we wouldn't need to compute again the distance of every tiles.