Make ghosts copy antialias from the main sprite

[x8c8r]

Now, I may just be completely fucking delusional and there is no problem there. But I swear I saw the ghosts be blurry because I was using a scaled up pixel sprite, so I made this change.

I don't know what was the best way to make it, so I opted to just make the ghost sprite copy antialias from the main sprite in the playGhostAnim function. It works, but if there is a better way - Let me know I will use it.

Also me moving the ghost initialisation was from a previous attempt at making this fix ignore that.