KConfigWidgets:
* KStandardActions T12246:
* Move somewhere else outside KConfigWidgets
* KRecentFilesAction requires config
* KRecentFilesAction uses KSelectAction but incorrectly?
* KCModule T12150:
* It's a QWidget, there's also KCModuleQml, do some inheritance or composition thing
* or move every KCM stuff into KCMUtils?
* KCodecAction:
* Kate has its own, merge?
* KColorScheme T11587:
* Why in kconfigwidgets? Needed all over the place
* Add some features to QPalette (like positive, negative, neutral colors)?
* Check if Windows, macos, Android, etc have semantic colors
* Does it need KConfig? https://phabricator.kde.org/T11587
* KColorSchemeManager:
* a widget with a model of colors and something to set custom color scheme
* Split model and setting logic somewhere else?
* Make it a standard action for them menu?
* Needs "system color" option to reset custom color
KRecentFilesAction:
* Get rid of KConfig, store INI in some state home dir instead
Move everything related to showing and providing config to KCMUtils.
Make KConfigWidgets be widgets using KConfig (ktipdialog, KRecentFilesAction)