WIP : Extend calo packers

Add packers for CaloAdc and CaloDigit objects. Using CLID = 1542 and 1543, respectively (waiting for validation from @clemenci)

Modified piece of code :

• new packers for CaloDigit and CaloAdc objects - Event : PackedCaloDigit.h & PackedCaloAdc.h - src/lib : PackedCaloDigit.cpp & PackedCaloAdc.cpp - src/component : add instances in Packers.cpp / UnPackers.cpp / Checkers.cpp - dict/ : PackedEventDict.{h,xml}