Document workflow to import embedded textures from Maya

Customers are confused how our workflow expects them to handle the importing of textures in models. Create a documentation page that explains how the textures must be handled to make them visible again on Qt Design Studio 3D Editor. This page most likely is going to be shared with all the export-import workflows from different 3D design tools (Maya/Blender/3DS MAX etc.) so it probably makes sense to have it as separate and then provide a link to it from each tool specific documentation page we have (starting with the existing Maya export workflow document)