colocado peso nas faixas perto dos cruzamentos para evitar trafego incorreto.
spawning cars from game controller
tweaking the navigation
added basic game flow
 game logic update

Changed game logic to track each cars remaining time before the game is
over. Added hovering labels to the cars
updating GUI. Adding colors to cars and destination points (WIP)
updating the scene
added gameobjects representing "os sinais"
added logic to set a trigger on the cars when they hit a sinal
basic game working