No, there isn't any resurrection magic available so far in this cycle. Otherwise, Ghostwalker and the other Greats would have at least tried bringing Dunkelzhan back, or any of the other dragons killed by dragonslayers during the off times. Most likely, Ghostwalker's body was in a suspended animation type situation, maybe similar to the Petrify spell?
At any rate, while it is true that dragons with the magician quality can astral project (I don't know of any dragon adepts or mystic adepts, but they could be out there), Ghostwalker was clearly going deeper into the metaplanes than people normally go, hence having to break through walls to return (and letting the shedim in).