His Facebook page IDs ad hoc impresario Chris Wells as an “artpreacher” and “celebrationist.” He’s all that and. A gifted actor/writer himself, he also has a knack for spotting and fostering avant-garde talent. The ongoing “Secret City” gatherings that he began curating and hosting in Manhattan in 2007 earned him a 2010 Obie Special Award and comparable acclaim in LA.  A decade ago, Wells and his husband, artist Bobby Lucy, settled in Woodstock, a town not short on gifted eccentrics. Even there, Wells is a standout. It could be the garb—fantastical outfits commissioned from local designers—but more likely it’s his…