Walking Path tiles about idlecity

[mathew-tran]

hrm.. I think we may need to move to Astar here to get to weighted paths. We are currently using navigation agent 2d. and enabling / disabling navigation on the tilemap.

According to this ticket, tilemap doesn't support costs
godotengine/godot#79688

1. There is a tutorial that links the tilemap to the astar system
   https://www.youtube.com/watch?v=dVNH6mIDksQ

I don't know if it'll be as performant, but it's a start.

[mathew-tran]

Ended up using astar grid and overlaying it on top of the tilemap.

[mathew-tran]

Merged in:
3ebfd2c