mpackage: Add `mpackage` importation graph
mpackage: Add `mpackage` importation graph

Add the attribute `mpackage_importation_graph`. Each package is in relation with itself.

Signed-off-by: Florian Deljarry <947961b90cb93a9343e8ca0457b9d463c3e20c1c@gmail.com>

privat/nit,privat/nit,privat/nit,privat/nit,privat/nit,privat/nit,privat/nit,privat/nit,privat/nit,privat/nit