ENH: automatically gets inputs and outputs from csv file

[Gui-FernandesBR]

Is your feature request related to a problem? Please describe.

It would be convenient if we started to use the header of the csv files to define the inputs and outputs names in the Fucntion class.

Describe the solution you'd like

In the case where the inputs or outputs are set as None, overrides it using the headers of the csv file if they are present.

``*inputs, outputs = first_linesplit(",")

Additional context

This was suggested by @phmbressan