Made building consume resources

Now may build more than one if resources allow
building placement is red/green for indicating success

scripts/interaction_bar.gd

@@ -15,5 +15,5 @@ func _ready() -> void:
 func _cleanup_gather() -> void:
 	interaction_finished.emit()
 	var res: GameResource = Grid.get_location_data(grid_position).get_resource()
-	res.gained_resource.emit(res)
+	ResourceManager.pickup(res)
 	self.queue_free()