WIP: Allow ICaloFutureDigitFilterTool to be included from other projects
Move ICaloFutureDigitFilterTool to a new folder CaloFutureReco/CaloFutureReco and add it to gaudi_install_headers
so it can be included from other projects.
This is needed to be able to use CaloFuture code in TupleToolCaloHypo in Analysis.
I am not sure this is the best way to go, maybe it's simpler to move this interface back to LHCb?