new mode of moving and direction based movement use abs method for speed

moving freely based on speedx and speedy, which can be negative or positive
moving along direction get absolute value of speedx and speedy
Using Sprite instead of Ship and so we don't need Ship class anymore
Using Sprite for player and showing 2 ways of moving it

1.st way is based on moving it along a direction with help of eventhandlers
2.nd way is based on moving it using the speed values