Add library prediction from sequence list

[wahlema]

Hi,
I think it would be very nice if the option to predict libraries from sequence lists from alphapeptdeep could be included. This would not only be helpful for peptide based searches (such as HLA) but could also be valuable for experiments where internal standards such as iRT standards or any labeled peptides are used as a spike in next to the actual sample. Maybe in a way that you can provide a sequence list next to the fasta either with or without protein information and then you can either add it to a digestion based library or use it as a standalone library?