Initial commit of openVisualizerCli based on OpenVisualizerApp.

Also uses Python cmd module for command line handling.

Runs on Linux with:
1. PYTHONPATH set to:
../../../openwsn-fw/firmware/openos/projects/common:..:../openUI:../openCli:.:eventBus/PyDispatcher-2.0.3

2. Use command line from software/openvisualizer directory:
python bin/openVisualizerApp/openVisualizerCli.py -d build/openVisualizer -f ../../../openwsn-fw