Enhance ranked play stage countdown timer SFX

[nekodex]

• adjust the warning stopwatch sample to start from when the timer shows 10.xxx s instead of 9.xxx s
• add an additional 'time almost up' sample that layers on top for the last 3s
• re-add the 'time ran out' audio cue, with an updated sample

in context, with bgm:

time-warning-bgm2.mov

without bgm:

time-warning-raw.mov

I'm not 100% on the 'time ran out' sample, but at least it sounds deliberate now, unlike the previous buzzer which could have been mistaken for an audio glitch.

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• depends on Update time warning samples for ranked play osu-resources#420