Added 1v1 Mode (Trophy Road) along with additional game tweaks

New Features:
- Added 1v1 mode: The game matches you with an opponent and you compete for trophies and coins.
- The players win percentage and win streak now gets displayed on the matchmaking screen
- Added Skid marks and Drift sound
- The Race start countdown timer is now replaced with a lights out screen

Improvements:
- The sound of the vehicle mutes when a message popup is shown on the tutorial
- Made more improvements to the tutorial

Changes:
- Tweaked the Topdown Camera angle
- Made changes to the AI difficulty
- Increased the vehicle turn sensitivity when going at high speeds
- Tweaked the tire life of all the tires
- Reduced the sound of the in game music