Extra Song UI should show some more data points

It would be nice to have Extra Song UI show two more values of data during gameplay:

The current amount of Star Power you have as a value.
- This could be represented as a percentage where 0% is no star power and 100% is full star power (with 50% being the activation cutoff).
The current percentage of notes hit.
- This can simply be a calculation of notes hits divided by notes passed.
- One quirk is that you will always get 0 divided by 0 before the first note, which typically should give NaN%. Perhaps this should be changed to 100%, and any other possible 0/0 scenarios should be changed too.
The current percentage through the song.
- Again nice and simple based on the current progress divided by the total song length (although it will try and surpass 100% at the very end of the song so maybe cap that).

Biendeo / My-Clone-Hero-Tweaks