added codegen-scripts and updated libs

Software/codegen/run_pre.py

@@ -0,0 +1,8 @@
+Import("env")  # pylint: disable=undefined-variable
+env.Execute("\"$PYTHONEXE\" -m pip install jinja2")
+
+import struct2json
+import dtcs
+
+struct2json.struct2json()
+dtcs.build_dtcs()