[FEAT]: support ssh forward agent

[tcurdt]

Describe the need

It would be great if the Github provider could re-use the auth provided through the ssh-agent and would not require a token.

With ForwardAgent yes and

  connection {
    type  = "ssh"
    user  = "root"
    host  = self.ipv4_address
    agent = true
  }

terraform does support connections to the remote machine via agent.

It would be great if the Github provider could do the same.

SDK Version

No response

API Version

No response

Relevant log output

Code of Conduct

• I agree to follow this project's Code of Conduct