Draft: Add neutron channel B->Jpsi K
To reconstruct neutron in LHCb, we choose a golden channel B->(Jpsi->pnbarpi)K with loose cuts. In this MR, we also require to save calo information for future study with a novel method. The bw is 0.023GB/s in HLT2 line with prescale=0.01, we could decrease to 0.001 or other suitable value to be involved in BnoC.