Adding PSL based Gold Standard file

[igrangel]

We have to add manually a GoldStandard.txt file for each one of the AutomationML testbeds documents. This should be the focus now.

[omarrana]

I have done this but with a semi-automatic way. I first run through rules and then manually check if something is missing.
Multi heterogeneities are in progress. I have done major ones like M2-M3