KColorSchemeManager (from KConfigWidgets) was changed in 5.89 to handle
loading/saving the selected color scheme automatically if
KColorSchemeManager::setAutosaveChanges(true) is used (it auto saves by
default, but calling setAutosaveChanges(true) makes it easier to understand
the code).
However this is conditional on KConfigWidgets >= 5.93 because that's where
the KColorSchemeManager::createSchemeSelectionMenu() overload used here was
changed to load the previously saved color scheme.
Since KColorSchemeManager uses "ColorScheme" as the config entry name,
migrate the old config entry when KF >= 5.93.
- refactor the code
- remove redundant includes
- change the string used in the GUI to "window color scheme", to differentiate
between it and the terminal color schemes
Add AppColorSchemeChooser class which use KColorSchemeManager to change
konsole color scheme. Inspired by KateColorSchemeChooser wrote by
Zhigalin Alexander <alexander@zhigalin.tk>.
Ahmad Samir
Maximilien DI DIO