setup.py: install pygobject-codegen script
setup.py: install pygobject-codegen script

Signed-off-by: Dieter Verfaillie <ed2c9e2fab82acaa7daaf30cf5cc5ab110dfe77c@optionexplicit.be>

GNOME/pygobject,nzjrs/pygobject,MathieuDuponchelle/pygobject,nzjrs/pygobject,Distrotech/pygobject,nzjrs/pygobject,choeger/pygobject-cmake,pexip/pygobject,thiblahute/pygobject,GNOME/pygobject,davibe/pygobject,jdahlin/pygobject,choeger/pygobject-cmake,Distrotech/pygobject,alexef/pygobject,davibe/pygobject,sfeltman/pygobject,sfeltman/pygobject,MathieuDuponchelle/pygobject,MathieuDuponchelle/pygobject,alexef/pygobject,alexef/pygobject,davidmalcolm/pygobject,Distrotech/pygobject,davidmalcolm/pygobject,sfeltman/pygobject,davidmalcolm/pygobject,pexip/pygobject,jdahlin/pygobject,davibe/pygobject,GNOME/pygobject,pexip/pygobject,thiblahute/pygobject,choeger/pygobject-cmake,Distrotech/pygobject,jdahlin/pygobject,thiblahute/pygobject,davibe/pygobject