Bob Menendez is on his way out, after selling his powerful Senate seat to the highest bidder for cash, gold bars and a luxury car, and being convicted on all corruption charges, including being a foreign agent. In theory, he could fight this case all the way up to the U.S. Supreme Court, but the odds are against him, and a chorus of colleagues are already calling for his resignation – and if not that, his swift expulsion from the Senate. So Gov. Phil Murphy should prepare for the obvious and appoint Rep. Andy Kim to the seat, as soon as Menendez vacates it. Kim’s a fellow Democrat who’s likely…