Add a filter/tool to calculate the amount of ornaments in a score

[yukiyod]

• Give a count of turns, mordents, trill along with their durations.

• Also give a duration of tremolos (but not counts) and also only count the intersection of tremolos in different voices or staves (i.e., percentage of the full score).

• Durations in terms of musical notes as well as time (depending on the tempo).

• Tremolos separated by fingered and repeating

• For tremolos, have a note duration cutoff, such as 16th notes or faster, 32nd notes or faster