OpenSSH compatible CLI

The libssh-CLI would act as a compatibility layer or wrapper around the libssh library. It would:

• Parse command-line arguments in the OpenSSH format
• Translate those arguments to the appropriate libssh API calls
• Handle the results and present them to the user in a way consistent with OpenSSH

Core Features:

• Basic SSH connection handling
• Standard OpenSSH options support (-p, -l, -i, -o, -v, -q, -F)
• Authentication methods: password authentication, public key authentication, keyboard-interactive, SSH agent support