Qiime2 taxa composition annotator

Qiime2TableDbAnnotator class.

[Mandatory]: - taxa table coming from qiime2 taxa compo : Expcted format (included in the qiime2 diversity folder output object): index k__Bacteria;p__Fi;c__Clo;o__Clostri;f__toto;g__gege;s__titi sample_1 1205 sample_2 1705

- metadata file must follow specific nomenclature (columns are tab separated):

    Expected format :
        # tax_id        annotation_info
        bact_1  0
        bact_2  1
        bact_3  Variable;toto_1:0;others:1