NEW YORK — At 6 a.m. on a Saturday in mid-August, the newest entry into the sports network competition will do what American fans love: talk football. Fox Sports 1 debuts this weekend with a hint of the sort of programming it will offer up in its bid to lure viewers — from every other form of entertainment, in general, and from ESPN, in particular. For now, the pro and college football coverage is just chatting, though the NCAA games will come soon enough; any possibility of NFL action is still a ways off.