Feature Request - Port forward

[liamgibbins]

Is your feature request related to a problem? Please describe.
A problem with mysterium nope but a problem with CGNAT and ISP's

Describe the solution you'd like
For a self hosting company to be able get around the CGNAT problem you would have to have a VM running a VPN with port forwarding, there are alot of home businesses and start up businesses that try and self host from home but this is an issue with alot of ISP's out there as alot of them are CGNAT and I think Mysterium is missing out on this sector.

Describe alternatives you've considered
Hosting a VM with VPN on it that adds more cost than is needed if Mysterium suported port forwarding.

Additional context
Like myserlf I run a node and have web and email servers there for I do not have all ports available to forward but most consumer residential nodes dont run extra services to the internet so this would have to be a factor when setting up a port forward node.

I also think it would be a great opportunity for Mysterium to hit another market and one that most people do not know about.