Grammy-winning popstar Chappell Roan will join “ Fortnite Festival” as the next “Icon,” “Fortnite” maker Epic Games announced Tuesday. The “Red Wine Supernova” singer will appear as the headliner in Season 13 of the in-game event, which will kick off on Feb. 5.  A self-professed “Fortnite” player and fan (Roan once asked “Please give me a skin, please” in an interview), the star is ready to electrify the “ Fortnite Festival ” main stage, bringing with her the bold, theatrical universe she’s