Qt Charts 5.8.0

New features
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- [QTBUG-50544] Added new candlestick series type
- Added horizontal model mapper for box plot series

Fixed issues
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- Antialiasing is now supported for OpenGL accelerated series
- Mouse events are now supported for OpenGL accelerated series
- [QTBUG-56037] Ensure axis geometry is correct when axis is shown
- Fix areaseries bordercolor setting to black
- [QTBUG-56900] Fix domain initialization for area series

Example changes
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- Qmlcustomizations example sometimes failed to run the animation
- Fixed blinking after animation stopped in qmlcustomizations example
- Fixed qmloscilloscope example when using software backend
