making all 3d and particle related examples also available in qds

currently, as far as i know, qt quick 3d examples available in qt creater don't have .qmlproject file, therefore they cannot be opened in qds.

it would be better to have them all available, at least openable on qds as well so that the users can intuitively learn the concept of qt quick 3d, for example changing the properties in the properties view on qds and instantly see the result of it on 2d form view or livepreview.