Draft: [RAP-63]: Update calibrator pipeline for LBA according to most recent LiLF-pipeline

The calibration procedure for LBA calibrators is based on LiLF: https://github.com/revoltek/LiLF/blob/master/pipelines/LOFAR_cal.py

Especially, the Faraday-Rotation correction has encountered some significant changes. The need for this change needs to be investigated and potentially implemented for LBA-only runs.