Use swh-model objects in package loader.
Test Plan
Tests will fail because they depend on swh-model!83 (closed) and swh-model!84 (closed)
Migrated from D2714 (view on Phabricator)
Staging instance, all changes can be removed at any time
Tests will fail because they depend on swh-model!83 (closed) and swh-model!84 (closed)
Migrated from D2714 (view on Phabricator)