Rewrote car shader and other improvements

I have made a bunch of improvements to enhance your racing experience:

• 🌍 Language Selection Added Choose your language right from the start — even before the tutorial.

• 🚗 Visual Upgrades Improved car materials and shaders for a cleaner, more realistic look.

• 🎮 Controller Vibration Support Feel the action with haptic feedback:

  • Boosting

  • Explosions

  • Crashes Customize vibration strength in settings.

• 🔊 Improved Audio Experience Music now dynamically reacts to sound effects while keeping volume balanced.

• ✨ Better Menu Navigation Clearer highlights make selections easier and more intuitive.

• 👁️ First-Person Camera Boost Effect Added visual feedback when boosting for increased immersion.

• 🔁 Quick Restart Option Instantly restart from the finish screen after losing.