[Feature Request]: Add peak2peak of defocussing BPMs to lin-files

[JoschD]

Feature Description

Add the average peak-to-peak for the BPMs at the defocussing quads to the header of the lin-files.
This allows for an independent check from the values in multiturn.

Possible Implementation

The pk2pk is already calculated per BPM in the lin-files. So one would only need to use

LIST_1 = ["BPM.20L3.B", "BPM.18L3.B",
          "BPM.21R3.B", "BPM.19R3.B",
          "BPM.20L7.B", "BPM.18L7.B",
          "BPM.21R7.B", "BPM.19R7.B",
          "BPM.20R2.B", "BPM.18R2.B",
          "BPM.21L4.B", "BPM.19L4.B",
          "BPM.20R6.B", "BPM.18R6.B",
          "BPM.21L8.B", "BPM.19L8.B",]

LIST_2 = ["BPM.21L3.B", "BPM.19L3.B",
          "BPM.20R3.B", "BPM.18R3.B",
          "BPM.21L7.B", "BPM.19L7.B",
          "BPM.20R7.B", "BPM.18R7.B",
          "BPM.21R2.B", "BPM.19R2.B",
          "BPM.20L4.B", "BPM.18L4.B",
          "BPM.21R6.B", "BPM.19R6.B",
          "BPM.20L8.B", "BPM.18L8.B",]

DEFOCUSSING_MONITORS = {
    1: {"X": LIST_1, "Y": LIST_2},
    2: {"X": LIST_2, "Y": LIST_1}
}

(copied from the old multiturn gui: https://gitlab.cern.ch/acc-co/lhc/lhc-multiturn/-/blob/master/src/java/cern/lhc/multiturn/datamanagement/MonitorSetImpl.java#L42 )

and use the ones that are present and good (not sure when the bad-bpms are filtered, maybe need to check which ones are in the list of bad-bpms and which ones are not.)