Added script to compute source code stats.

stats.sh

+#!/bin/sh
+
+echo "LOC with pygount (pip install pygount)"
+
+echo "backend:       `pygount nomad/ -s py | awk '{print $1}' | paste -sd+ - | bc`"
+echo "backend tests: `pygount tests/ -s py | awk '{print $1}' | paste -sd+ - | bc`"
+echo "frontend:      `pygount gui/src -s js | awk '{print $1}' | paste -sd+ - | bc`"
\ No newline at end of file