RIDGEFIELD, Connecticut — Connecticut has been home to a thriving community of artists, including Sol LeWitt, Louise Bourgeois, Jasper Johns, Barkley Hendricks, Alexander Calder, Yves Tanguy, and Josef and Anni Albers, among many others. But new generations of artists have been making ambitious works in leafy college towns and sleepy suburban enclaves unbeknownst to many of their neighbors.That’s about to change. Over the next six months, the Al…