SHARON - The Scouts were engrossed in a game of foosball, but it was time for a more serious type of practice. Troop leader Nabeel Khudairi goaded them from the game table and led the boys of Cub Scout Pack 111 upstairs to the prayer room of a mosque in Sharon. The boys, ages 7 to 11, are part of the only all-Muslim Cub Scout pack on the South Shore.