Switch from QGLWidget to QOpenGLWidget
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QGLWidget has been deprecated => Nuke it and don't link Qt5::OpenGL
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Switch to the better, newer QOpenGLWidget (introduced in Qt 5.4)
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Fixes the OpenGL Renderer not working on Wayland
BUG: 403323
BUG: 410083
BUG: 420672
Signed-off-by: Madhav Kanbur abcdjdj@gmail.com