[Feature] Support SSH Client Config `Inlcude` & `ProxyJump`

• ~/.ssh/config

  Include ~/.ssh/config.etc
  

• ~/.ssh/config.etc

  Host ssh-dump
    HostName {IP}
    Port 2220
    User root
  
  Host ssh-target
    HostName {IP}
    User admin
    ProxyJump ssh-dump
    IdentityFile ~/.ssh/cert/target.pem
  

• command-line connection

  ssh ssh-target
  

• Mysql Shell for VS Code

  ERROR: Shell.open_session: Cannot open SSH Tunnel: Failed to resolve hostname ssh-target (Name or service not known)
  

  

Start by tracing how the MySQL Shell for VS Code resolves the SSH target from ~/.ssh/config, using the ssh ssh-target example as the reference behavior. Compare that with the Include file ~/.ssh/config.etc and the ProxyJump ssh-dump configuration. Done means the VS Code connection can resolve ssh-target and establish the SSH tunnel without the reported hostname error.