@brief Check if the given extension is supported.
@param sftp The sftp session to use.
@param name The name of the extension.
@param data The data of the extension.
@return 1 if supported, 0 if not.
@code sftp_extension_supported(sftp, "statvfs@openssh.com", "2"); @endcode
See Implementation
@brief Check if the given extension is supported.
@param sftp The sftp session to use.
@param name The name of the extension.
@param data The data of the extension.
@return 1 if supported, 0 if not.