Add debug meta information between Seer and gdbserver

[epasveer]

Look at #127

One thing that would be nice to have for tools debugging purposes would be to record the conversation between gdb and the stub for each command seer is outputting with timestamps. I am saying this because:

For reasons I didn't investigate, connection between seer and spice86 is very slow (I measured ~16 seconds) whereas it is instantaneous with the gdb command line.

As a gdbserver dev, I know this would have helped me a lot when investigating which command was not providing results gdb was expecting, or investigating timeouts and locks.

[epasveer]

Here's a good resource to enable gdbserver monitoring.

https://sourceware.org/gdb/current/onlinedocs/gdb.html/Server.html#Other-Command_002dLine-Arguments-for-gdbserver