Add NFFG convertion to gui.py to be able to display NFFGs in Virtualizer format also
Add NFFG convertion to gui.py to be able to display NFFGs in
Virtualizer format also

hsnlab/escape,hsnlab/escape,hsnlab/escape,5GExchange/escape,5GExchange/escape,hsnlab/escape,5GExchange/escape,5GExchange/escape,5GExchange/escape,5GExchange/escape,hsnlab/escape,hsnlab/escape