Korau: Pitch change doesn't work

[ArtyomZhukov]

korge-core library: 5.4.0

Pitch changes doesn't affect on a result sound.
Tried to change pitch in PlaybackParameters and in SoundChannel.

sound = resourcesVfs["sound.mp3"].readMusic()
soundChannel = sound?.play(params = PlaybackParameters(pitch = params.value.pitch))

soundChannel?.pitch = newPitch

[soywiz]

Pitch shifting might be needed to be implemented via software, when no hardware option is available. In the meantime we can indicate that it won't work in all the cases.