Make counters' rolling duration adjustable

[leduyquang753]

Describe the new feature: Currently the counters' display (score, accuracy, combo) have a rolling effect which does not reflect the current stats immediately. I think there should be options to toggle the effect (or at least adjustable).

Proposal designs of the feature: There will be three sliders in Gameplay → General: Score counter rolling duration; Accuracy display rolling duration and Combo counter rolling duration. Alternatively, if simplicity is leaned towards, there will be three toggle options to enable the rolling effect for each counter, or just one to toggle them altogether.

[peppy]

This would be a skin decision if anything. I'm not sure we will add this because the rolling is part of what I would consider a game being a game, and not a number simulator.