added gotty

[FloSch62]

This lets you adhoc create a gotty webterminal
https://github.com/sorenisanerd/gotty

docker run --network clab --rm -i -t \
  --name gotty-adhoc \
  -p 8080:8080 \
  -v /etc/hosts:/etc/hosts \
  --entrypoint '' -d \
  ghcr.io/srl-labs/network-multitool \
  sh -c "gotty-service start 8080 admin admin2 && tail -f /var/log/gotty/gotty-8080.log"

❯ docker exec gotty-adhoc gotty-service status
GoTTY service is running on port 8080 (PID: 11)
Access web terminal at: http://<host-ip>:8080
Username: admin
Password: admin

Not as fancy as sshx, but fully local and with credentials

[hellt]

let's make it multi arch friendly by introducing a build image for gotty that uses go install way of installing gotty
then you just copy the binary from this build step to the target system

[FloSch62]

I changed it so its installed during a build stage and copied from it