* NEW: Update 'lunar' compilation in '.gitlab-ci.yml' so that it compiles the new 'gb.qt6' component.
* NEW: New components based on Qt6.

[DEVELOPMENT ENVIRONMENT]
* NEW: Support for new GUI component 'gb.qt6'.

[GB.QT4]
* NEW: Update source code for 'gb.qt6'.

[GB.QT5]
* NEW: Update source code for 'gb.qt6'.

[GB.QT6]
* NEW: New component based on Qt6.

[GB.QT6.EXT]
* NEW: New component based on Qt6.

[GB.QT6.OPENGL]
* NEW: New component based on Qt6.

[GB.QT6.WEBVIEW]
* NEW: New component based on Qt6.

[GB.QT6.WAYLAND]
* NEW: New component based on Qt6.

[GB.QT6.X11]
* NEW: New component based on Qt6.