[devtools] Update skeleton's setup.py to install cube as a package
Most of the prior logic of skeleton's setup.py gets dropped as installing a
cube as a "classic package" (i.e. in site-packages) is just the default
behavior of distutils.
Also add a test checking installation of new cube.
Related to #13001466.
#! /bin/sh -e
case "$1" in
remove)
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl stop || true
fi
;;
esac
#DEBHELPER#
exit 0