Feat unix streams

[Arshia001]

A few changes related to sockets, unix streams and tty (all needed for crossterm to work):

• Update IPv6 and unix stream address structs
• Add address translation between libc <-> wasix for sockaddr_un
• implement TIOCGWINSZ

[ptitSeb]

CI is red, but that seems to be an issue with the CI test iotself?

[Arshia001]

Yes, the red pipelines are from the original wasi-libc. The one we merged today is green.