generalize read_biotyper_report to accomodate alternative identification/taxonomy

[cpauvert]

Is your feature request related to a problem? Please describe.
As suggested by a reviewer, how can we import 16S rRNA based identification if the Bruker identifications are not available?

Describe the solution you'd like
Add a generic import function for identification from which a specific read_biotyper_report can be spawned.
delineate_with_identification() should be able to use the generic as well then