jerome.buisine/p3d_pbrt-v4-scenes-stereo: pbrt scenes with stereo enabled

Jérôme BUISINE 0aff7bea84 update villa scene		3 lat temu
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geometry	1ab5be7221 first version of villa scene added	3 lat temu
textures	1ab5be7221 first version of villa scene added	3 lat temu
geometry.pbrt	1ab5be7221 first version of villa scene added	3 lat temu
materials.pbrt	1ab5be7221 first version of villa scene added	3 lat temu
villa-lights-on.pbrt	0aff7bea84 update villa scene	3 lat temu