PIM-3560: extract base classes
PIM-3560: enable AkeneoDoctrineExtensionsSupport bundle
PIM-3560: rename the bundle to AkeneoDoctrineExtensionsBundle
PIM-3560: alias former services to AkeneoDoctrineExtensions services
PIM-3560: fix specs and unit tests
PIM-3560: remove all occurencies to catalog or product
PIM-3560: move resolve doctrine target repositories compiler pass
PIM-3560: update UPGRADE-1.3.md
PIM-3560: introduce ROADMAP.md
PIM-3560: rename AkeneoDoctrineExtensionsBundle to AkeneoStorageUtilsBundle
PIM-3560: rename compiler passes properly
PIM-3560: clean resolve target repository subscriber service
PIM-3560: fix namespace
PIM-3560: update CHANGELOG.md