In both his life and his art, fashion designer Alexander McQueen was thoroughly outrageous, so it's more than fitting that his final hour before his suicide in 2011 has inspired not a book or a biopic but an opera " the most gloriously unrestrained and emotionally visceral of all the art forms. The worlds of fashion and music align in composer/designer Kentaro Kameyama and librettist William Nedved's intriguing new o…