Use a ControlValueAtomic to return pitch and tempo from KeyControl
Use the tempo from KeyControl to calc the speed
Improve docu and clean up logic bit
make use of static set and get functions
fix EngineBufferTest::DisableKeylockResetsPitch
Reset pitch on track load as well together with speed
Added EngineBufferTest::PitchAndKeylockModeRoundtrip
reanable key_sync and respect key distance