add shell script to test Beremiz python code

currently only codestyle checking is done using pycodestyle (ex-pep8).
Later checks by flake8 and pylint maybe enabled.

<?xml version='1.0' encoding='utf-8'?>
<BaseParams xmlns:xsd="http://www.w3.org/2001/XMLSchema" IEC_Channel="0" Name="py_ext_0"/>