keep example folder in generators up to date

[jhowlett-scottlogic]

Having the example folder up to date gives new users an understanding of the generators capability helping gain adoption.

One option: A pre-PR hook could be used to run the forge command with the new generator and then an auto commit made to update the example/ folder with the new output

Another option: a workflow in each generator that is triggered on push to master that runs the forge command and updates the example/ folder