build: add setuptools install script
build: add setuptools install script

Add a new setuptools install script which will allow us to eliminate
the autotools-based python install in some environments, such as Yocto.
This will reduce the recipe complexity and allow future work towards
meson-based build.

Signed-off-by: Patrick Williams <cbb7353e6d953ef360baf960c122346276c6e320@stwcx.xyz>
Change-Id: I23af49db2ba2245a5a44cfa5bc50a4734e7ca89c

openbmc/sdbusplus,openbmc/sdbusplus,openbmc/sdbusplus,openbmc/sdbusplus