Separate input values files

[antgonza]

Currently, in the same file you need to have the 3D value point and the values to plot in the model. I think a better way to go about this is to have:

• The model (stl)
• The sample names and position in 3D (csv) -- we could even perhaps merge this and the previous one
• Multiple input formats where you have different information (rows vs features).

I believe this will be more convenient because the first 2 only are needed once but the 3rd kind can hold different kinds of values and could constantly change: family or species level taxonomic information, metobolomics, PCoA axes, etc.