clean target dir for  unit test

Signed-off-by: Rémi Parain <rparain@ubidreams.com>
refactor output filepath

Signed-off-by: Rémi Parain <rparain@ubidreams.com>
refactor output filepath dir

Signed-off-by: Rémi Parain <rparain@ubidreams.com>
refactor libs dir handler

Signed-off-by: Rémi Parain <rparain@ubidreams.com>