Handle error banks
Frontends can send error banks instead of or in addition to normal sub-detector raw banks. Events containing error banks are not treated by the regular HLT1 sequence, but instead flagged with a specific routing bit. Error banks should be monitored in a histogram.
The MFP header contains a block of bank types. These need to be passed to the sequence (for example in the BanksAndOffsets object). A filter (before the GEC) then needs to be applied, such that only events w/o error banks are processed in the following. Bank type integers above a certain value are error banks.