Ho-hum, another comedy starring comedians playing comedians. Before you say, “Been there, seen that,” check out Hulu’s hilarious new series “Difficult People,” whose first two episodes will be available on Wednesday, Aug. 5. In the eight-episode series, Julie Klausner and Billy Eichner play struggling comics who live and do stand-up by the maxim, if you can’t say anything nasty about someone, you need a new act.