A few post submission changes

No gameplay changes have been made but did add in a few quality of life changes such as:

Menu:

• Added background music
• Added control scheme
• Added name of game
• Increased font size of high score

Game:

• Added count down sound
• Added in speech bubbles at start to help motivate the player
• Added explosion at end to stop player from just coating to a stop
• Fixed highscore not displaying on end screen
• Added in speedlines to emphasise speed
• Added sound for when record beaten
• Added graphic for acceleration
• Changed font sizings
• Timer will increase font when 5 seconds remaining
• Added incentive to beat highscore
• Fixed sound delays when sound first heard