Implement LofarMetaDataUtil::readAntennaFieldAartfaac
The function LofarMetaDataUtil::readAntennaFieldAartfaac
(https://git.astron.nl/RD/EveryBeam/-/blob/2-refactor-code/cpp/LofarMetaDataUtil.cc#L249) is just a stub right now. This function still needs to be imported from LOFARBeam
.