Added height and width instance variables. Created displayBoardSize function that outputs the board's height and width.
Added scoreValue instance variable to Food class and created displayScoreValue() function to output the value of each food item collected by snake.
Added instance variables for each menu option of the Game Over menu, made the function to display them.
Added score instance variable to Score class and a function to display it.
Added function to add 100 points to score in Score class.
Added instance variable of current timestamp in secons in the Time class along with a method to display it.
Added instance variable of current snake length to Snake class, along with method to display it.
Created new instances of all classes and called their first method in main() function.