ECI LU Massbank comment fields

Here is what I propose.

Imagine COMMENT: prefixing all the subsequent lines.

RMBMIX_VERSION VER
DATASET YYYYMMDD_DATASETNAME_[SPEC_...]

Tracking provenance is not going to be fully possible through the record as it was for the single file. Some of it will be clear from the record, though, so any CE=30 will always have a defined child shift in the accession compared to the lowest CE parent ion for that ID.

We can generate an additional manifest where we save the original acquisition numbers of the MS2 spectra we are splicing:

RECORD_NAME CE ACQUISITION_NO FILE
LU.....     30 NNNN           ....
.
.
.

if needed.

What do you think @emma.schymanski and @anjana.elapavalore ?