EZP-22465: fixed docblock typo
EZP-22465: fixed CS
EZP-22465: set legacy db handler directly
EZP-22465: transform LegacyDbHandlerFactory into general storage connection factory
EZP-22465: add createConnectionFromDSN() and createFromConnection() to ConnectionHandler

This is done because MVC provides Doctrine Connection so Core settings can be used as a base to build upon
EZP-22465: add StorageConnection container compile pass
EZP-22465: fixed: make class parameter naming uniform
EZP-22465: fixed: added type hint
EZP-22465: configure storage connection service
EZP-22465: update for removed private service ezpublish.api.storage_engine
EZP-22465: updated: create db handler from Connection
EZP-22465: remove deprecated alias
EZP-22465: update for changed configuration