Function start 

pub fn start(
    session: &SessionName,
    server_executable: &Path,
    external_layout: Option<&Path>,
) -> Result<()>

Start or attach to a muxr session and run an interactive client.

Errors

• The session paths cannot be resolved.
• The server cannot be started or attached.
• The current terminal size cannot be read.
• Terminal input/output or protocol IO fails.