[DietPi-VPN] - ProtonVpn - Name in place of Domain

[ghost]

[MichaIng]

I agree this would be helpful. We can add name and load additionally, to the right side of the menu. Those whiptail menus have two fields. The left one is returned as output and needs to be the domain so that we can apply it to the OVPN config. But the right field is currently empty and can be well used for additional info provided by VPN providers.