// Building one of my favorite old game - "Snake Game"
//Objectives:
<1> Creating a turtle and screen function and change bg to black.
<2> Creating snake's body.
<3> Animating the movement of snake's body
<4> Making the code cleaner by making a class
<5> to change direction of the snake moving with key presses
<> Also the snake should not move the opposite direction
<6> Making another food.py folder to implement food system in the game.
<7> Detecting collision of the snake and the food
<8> Creating a Scoreboard when the snake collides with the food.
<9> Detecting collision with the wall (Game Over)
<10> Final Objective : Detecting when the snake head hits the tail (Game Over)