Add CaloCheckers folder

So far all the mc-related calo algorithms were in the CaloAssocitators folder. This MR adds a CaloCheckers folder that contains the efficiency and resolution algorithms:

• CaloClusterResolution.cpp
• CaloClusterEfficiency.cpp
• CaloHypoEfficiency.cpp

Moreover, some old algorithms that are not used in Moore any longer are removed ("Future" versions of these algorithms exist and are currently used in Moore):

• CaloDigit2MCLinks2Table
• CaloHypoMCTruth

I haven't checked if these algorithms are used in DaVinci (hope not).

The RecoConf.hlt2_reco_calo_efficiency and RecoConf.hlt2_reco_calo_resolution_gamma test run successfully on my local stack after these changes.

FYI @graven @gcorti @jmarchan