Diet mode

It would be nice to add a workout/diet mode like the console versions of Dance Dance Revolution that just shows a calorie count at the end of the song and skips the grading 😊.

Songs would play in a random sequence at the selected difficulty level. Stat page at the end of each song shows calories burned for the song/daily total/cumulative total. The next song can either be a single random song or a choice between two. Session song history tracked to avoid duplicates in a given day.