Make graphics better

[Nethan-Karerakattil]

If you take a look at the game as of now (https://pacman-q1go.onrender.com/), you can see that the sprites are very blurry. This is because I drew the sprites with a resolution of 8x8, but then the code scales the images up to 16x16. To make the graphics better, the images must be redrawn to a resolution of 16x16 so that the code does not have to scale the images up, which would make the game look more crisp.