Added Roads and Building refinement - fixed the original AI traffic movement from aimlessly moving around, now they follow lanes properly (however some travel sideways in a certain direction of road layout which I plan to fix shortly)

• Added city roads across the map
  -Reintroduced building collisions so the player bounces off buildings.
• Restored AI traffic spawning.
• Fixed empty grass areas by expanding the city.
• Identified a traffic bug causing stretched green vehicles and server lag.
• Next objective: rebuild the traffic system with proper lanes, turning behaviour, and realistic road following. As well as building the car models and the in game UI.