Doc: Add module licensing details into navigation bar

Licensing is explained on the landing page - in addition,
show the information on the navigation bar using 'buildversion'
as it's done with other GPLv3/Commercial modules.

Task-number: QTBUG-83752
Change-Id: Ib7508e07f1c59351d3517df2e3f72f8a6cc1d579
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

src/imports/quick3d/doc/qtquick3d.qdocconf

@@ -3,6 +3,7 @@ include($QT_INSTALL_DOCS/global/qt-module-defaults.qdocconf)
 project                 = QtQuick3D
 description             = Qt Quick 3D Reference Documentation
 version                 = $QT_VERSION
+buildversion            = Qt Quick 3D | Commercial or GPLv3
 
 examplesinstallpath     = quick3d