IPv6 Support for Marzban-Node

[Ashaxer]

In main.py file inside Marzban-Node docker container, "0.0.0.0" is used as host in uvicorn.run()
Please make it configurable with .env (just like main Marzban) or change it to "::" to make it listen to IPv6 network Interface too.

[fodhelper]

Are you sure "::" makes it to listen to both IP versions?
some users at uvicorn repo said it must be like uvicorn.run(app, host=["::", "0.0.0.0"], port=8080)

anyway, you can PR it to https://github.com/Gozargah/Marzban-node

[Ashaxer]

I can't PR, I'm newbie in these things. I cannot even fix it on my own server...
It will be appreciated if you do it.
Thank you!