[Feature]Hoping add combo hits and rnote hits display.

[traoearth]

There's only 3 common ways to know how many notes that a chart has:MercuryPlayer, MercuryChecker, and in-game label(commonly invisible on playing). But either way it's troublesome... So it would be really grateful if the combos hits could be displayed in the middle like in the actual game, and the detailed note counts could also be displayed in the upper left corner of MercuryMapper...