Add operator support for GCOS Daemon

[anonymous]

Now that the GCOS Daemon is working, it would be helpful to have operator support from the console in starting and maintaining it.

For example, "x io" and "x io1" prepare the printers, punches, etc. for use. It would be nice to have a "x gcos" that would login the GCOS daemon.

In a similar fashion, "x read_cards" starts a read on the card reader, "x gcos_read_cards" could attach and start the GCOS Daemon card reading.