Add support for VRayTriplanarTex and VRayUVWRandomizer in the bump channel of VRayMtl for Chaos Vantage. Merged

You have always been quite resistant to adding shaders that support the bump channel for Chaos Vantage, and I can understand that. However, when using baked textures, there will be the issue of tiling and repetition. In the short term, I'm not asking for your support for using shaders. But could you please add support for VRayUVWRandomizer and VRayTriplanarTex for the bump channel? It should be quite simple.