Implement a command-only session type over the HrrRbSsh client
Connection Channels' file descriptors, adjust from base command
session to deal with the separate reader/writer IOs. Technically,
a TTY session works out of the box here as well.
Implement a pair of showcase Ruby payloads using net/ssh to call
back to the handler, create a shell channel, and loop piping I/O
between framework session and client via the Ruby backtick exec.
Next Steps:
Command payloads need to be written for every major interpreted
language as well as some sort of bashism a la openssl_double if
it comes to that, but preferably single socket implementation.
Testing:
Very minimal, needs a good run through by the community and R7