add mechanism to append/delete entries to an already computed mgf

I see it this way:

graph
subgraph process
style process fill:#FFFFFF
010([isdb_2021.mgf]) -- list fragmented inchikeys -->
020[[isdb_2021_inchikeys_list.csv]] -- compare lists -->
050([comparison])
030([lotus_2022.csv]) -- list inchikeys -->
040[[lotus_2022_inchikeys_list.csv]] -- compare lists -->
050([comparison])
050([comparison]) -- list added inchikey -->
060([added_inchikeys.csv]) -- fragment and append to MGF -->
080([isdb_2022.mgf])
050([comparison]) -- list deleted inchikey -->
070([deleted_inchikeys.csv]) -- remove from MGF -->
080([isdb_2022.mgf])
end

mandelbrot-project / spectral_lib_builder

add mechanism to append/delete entries to an already computed mgf #2