HIJetRec MT migration - first part

Heavy Ion Jet reconstruction migration to MT. QT of Riccardo Longo (see also ATLJETMET-1155).

Main changes applied:

1. Equalization between master and release 21: done
2. Using DataHandles to read/write object collections form StoreGate: done
3. Making sure all usage of "public" tools is phased out: done
4. Making sure no tools in HIJetRec have mutable data members: done
5. Few changes in the HIJetRec algo to cope with changes in JetRec package

Todo list for future:

1. Using DecorHandles to read/write decorations on jets: not yet started
2. Add additional protection for MT to HIEventShapeMap: point brought up discussing this merge request - will be addressed after this is completed.
3. Migrating to the new ComponentAccumulator system for configuration: not yet started. Work on main Jet configuration side needs to be finished before this point is addressed