CMake: Implement the -list-features configure argument

abstractbutton .......... Widgets: Abstract base class of button widgets, providing functionality common to buttons.
abstractslider .......... Widgets: Common super class for widgets like QScrollBar, QSlider and QDial.
accessibility ........... Utilities: Provides accessibility support.
action .................. Kernel: Provides abstract user interface actions.
animation ............... Utilities: Provides a framework for animations.
appstore-compliant ...... Disables code that is not allowed in platform app stores
brotli .................. Networking: Support for downloading and decompressing resources compressed with Brotli through QNetworkAccessManager.
buttongroup ............. Widgets: Supports organizing groups of button widgets.
calendarwidget .......... Widgets: Provides a monthly based calendar widget allowing the user to select a date.
cborstreamreader ........ Utilities: Provides support for reading the CBOR binary format.
cborstreamwriter ........ Utilities: Provides support for writing the CBOR binary format.
checkbox ................ Widgets: Provides a checkbox with a text label.
clipboard ............... Kernel: Provides cut and paste operations.
colordialog ............. Dialogs: Provides a dialog widget for specifying colors.
colornames .............. Painting: Supports color names such as "red", used by QColor and by some HTML documents.
columnview .............. ItemViews: Provides a model/view implementation of a column view.
combobox ................ Widgets: Provides drop-down boxes presenting a list of options to the user.
commandlineparser ....... Utilities: Provides support for command line parsing.
commandlinkbutton ....... Widgets: Provides a Vista style command link button.
completer ............... Utilities: Provides completions based on an item model.
concatenatetablesproxymodel . ItemViews: Supports concatenating source models.
concurrent .............. Kernel: Provides a high-level multi-threading API.
contextmenu ............. Widgets: Adds pop-up menus on right mouse click to numerous widgets.
cssparser ............... Kernel: Provides a parser for Cascading Style Sheets.
cups .................... Painting: Provides support for the Common Unix Printing System.
cursor .................. Kernel: Provides mouse cursors.
datawidgetmapper ........ ItemViews: Provides mapping between a section of a data model to widgets.
datestring .............. Data structures: Provides conversion between dates and strings.
datetimeedit ............ Widgets: Supports editing dates and times.
datetimeparser .......... Utilities: Provides support for parsing date-time texts.
desktopservices ......... Utilities: Provides methods for accessing common desktop services.
dial .................... Widgets: Provides a rounded range control, e.g., like a speedometer.
dialog .................. Dialogs: Base class of dialog windows.
dialogbuttonbox ......... Dialogs: Presents buttons in a layout that is appropriate for the current widget style.
dnslookup ............... Networking: Provides API for DNS lookups.
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