[Qbs] Changing the default value of consoleApplication

[Oswald Buddenhagen]

On Tue, Apr 07, 2020 at 10:08:47PM +0300, Alberto Mardegan wrote:
>  I've recently built a Windows application with QBS, and was a bit
>surprised that it was built as a console application (the terminal
>opened when running it).
>
>Would anyone object if I submit a change to the QtGuiApplication item,
>so that it unconditionally sets the `consoleApplication` property to false?
>
i'm not convinced. qt.widgets and qt.quick could reasonably do that, but 
gui is perfectly suitable for console-only apps.

tbh, i don't think QtGuiApplication is a particularly useful convenience 
item - QtWidgetApplication and QtQuickApplication would be.