Add some parts of the qtdiag tool as a qtbase test to output the
graphics configuration to the CI log and to verify that Open GL can be
initialized for platforms on which the qopengl test is marked as
insignificant (for example, ANGLE).
Change-Id: Id445e57928e0307ad38cd433c52a62501f1097c6
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
