photosurface example crashes on Android

The Dialogs module will try to create a QFileDialog first, and that will crash because you can't have multiple windows on Android.

But first, it has to be possible to build this example for android; that requires a boilerplate C++ launcher and .pro file, because Creator will not even let you select the Android kit if you only have a .qmlproject file. It considers such projects to be desktop-only. photosurface so far only works with qmlscene, but being a touch demo, it makes sense to have it on Android too.