scipt for venv creation added

init_venv

+#!/bin/sh
+#
+BASEPATH=`realpath $(dirname $0)`
+
+python3 -m venv $BASEPATH/venv
+$BASEPATH/venv/bin/pip install --upgrade pip
+find $BASEPATH -name requirements.txt | xargs -L 1 $BASEPATH/venv/bin/pip install -r
+$BASEPATH/venv/bin/pip list --outdated --format=json | jq -r '.[] | .name'|xargs -n1 $BASEPATH/venv/bin/pip install -U