Create one or two synthetic datasets (incl. a default one)

[AlexisDrogoul]

Would be nice to have one simple dataset used as a default-- or two, with different properties (for instance the size ?). The goal would be to exemplify the data needed for new case studies and to conduct faster experiments too when testing new functionalities.

[chapuisk]

I think we will have to create a parameter file (like the epidemiological one) for the built in synthetic population generator !

[chapuisk]

After that, would it be suitable to have a Gen* version within the model ? which will required people to use the plugin otherwise, the gaml file would not compile.