Added test stub for quick performance tests of the comm layer
Added test stub for quick performance tests of the comm layer

Running comm.py with parameters port, baudrate, local file, remote file will
upload local file to remote file on the printer's sd using the provided connection
parameters.

Example:

    python -m octoprint.util.comm /dev/ttyUSB0 115200 /path/to/some.gcode test.gco

No plugin support! Only regular serial connection supported.

bicephale/OctoPrint,ryanneufeld/OctoPrint,ryanneufeld/OctoPrint,senttech/OctoPrint,Salandora/OctoPrint,Jaesin/OctoPrint,shohei/Octoprint,foosel/OctoPrint,beeverycreative/BEEweb,Javierma/OctoPrint-TFG,shohei/Octoprint,CapnBry/OctoPrint,Jaesin/OctoPrint,Salandora/OctoPrint,nickverschoor/OctoPrint,MoonshineSG/OctoPrint,leductan-nguyen/RaionPi,beeverycreative/BEEweb,Javierma/OctoPrint-TFG,JackGavin13/octoprint-test-not-finished,senttech/OctoPrint,ryanneufeld/OctoPrint,CapnBry/OctoPrint,nickverschoor/OctoPrint,Salandora/OctoPrint,foosel/OctoPrint,leductan-nguyen/RaionPi,Javierma/OctoPrint-TFG,bicephale/OctoPrint,beeverycreative/BEEweb,bicephale/OctoPrint,CapnBry/OctoPrint,foosel/OctoPrint,MoonshineSG/OctoPrint,Javierma/OctoPrint-TFG,JackGavin13/octoprint-test-not-finished,shohei/Octoprint,JackGavin13/octoprint-test-not-finished,bicephale/OctoPrint,ryanneufeld/OctoPrint,shohei/Octoprint,nickverschoor/OctoPrint,foosel/OctoPrint,senttech/OctoPrint,shohei/Octoprint,beeverycreative/BEEweb,Jaesin/OctoPrint,CapnBry/OctoPrint,nickverschoor/OctoPrint,Salandora/OctoPrint,leductan-nguyen/RaionPi,JackGavin13/octoprint-test-not-finished,MoonshineSG/OctoPrint,leductan-nguyen/RaionPi,senttech/OctoPrint,MoonshineSG/OctoPrint,Jaesin/OctoPrint