HaikuBook: Add skeletons for various undocumented interface kit classes

* BAbstractLayoutItem
* BAffineTransform
* BCardLayout
* BCardView
* BChannelControl
* BChannelSlider
* BDeskbar
* BGr

HaikuBook: Add skeletons for various undocumented interface kit classes

* BAbstractLayoutItem
* BAffineTransform
* BCardLayout
* BCardView
* BChannelControl
* BChannelSlider
* BDeskbar
* BGridLayoutBuilder
* BGridView
* BGroupLayoutBuilder
* BGroupView
* BInput
* BOptionControl
* BSeparatorView
* BSpaceLayoutItem
* BSplitLayoutBuilder
* BSplitView
* BStatusBar

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