[setup.py] change paths to scripts, add packages setup, remove fonts_public_pb2.py from scripts
[setup.py] change paths to scripts, add packages setup, remove fonts_public_pb2.py from scripts

googlefonts/fontbakery,graphicore/fontbakery,moyogo/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,graphicore/fontbakery,moyogo/fontbakery,graphicore/fontbakery,googlefonts/fontbakery