As word has circulated that the CBS board is reportedly negotiating a potential exit package for CEO Les Moonves — a scenario that was until recently unimaginable — Wall Street appears to be taking a wait-and-see attitude. Shares in CBS are up a fraction on lighter-than-average volume so far today. At about $53.20, they are in the range where they have traded since the New Yorker ran its damaging article on Moonves and allegations of sexual misconduct by several women…