The first, or maybe the second thing to be said about “The Artist,” a six-part comedy written and directed by Aram Rappaport, is that it streams from the Network, a free ad-supported streaming service Rappaport created to release his previous series, “The Green Veil.” The first three episodes premiere Thursday; the concluding three are due at Christmastime. The second, or maybe the first thing to say about it is that it comes pulling a tramload of heavy talent — including Mandy Patinkin, Janet McTeer, Danny Huston, Hank Azaria, Patty Lupone, Zachary Quinto — which begs for it to be taken...