Add ASV/OTU to taxonomy string for sequences

Preliminary output example:

ASV_OTULabel	ASV_Abundance	Taxonomy_Clustered_OTULabel
Otu0001	12196	Bacteria;"Bacteroidetes";"Bacteroidia";"Bacteroidales";"Porphyromonadaceae";"Porphyromonadaceae"_unclassified;Otu001;
Otu0002	8829	Bacteria;"Bacteroidetes";"Bacteroidia";"Bacteroidales";"Porphyromonadaceae";"Porphyromonadaceae"_unclassified;Otu002;
...
Otu0331	4	Bacteria;Firmicutes;Clostridia;Clostridiales;Lachnospiraceae;Lachnospiraceae_unclassified;Otu041;
Otu0332	4	Bacteria;"Bacteroidetes";"Bacteroidia";"Bacteroidales";"Porphyromonadaceae";"Porphyromonadaceae"_unclassified;Otu005;
Otu0333	4	Bacteria;"Proteobacteria";Gammaproteobacteria;Pseudomonadales;Moraxellaceae;Acinetobacter;Otu259;
Otu0334	4	Bacteria;Firmicutes;Clostridia;Clostridiales;Lachnospiraceae;Lachnospiraceae_unclassified;Otu187;
...
Otu2423	1	Bacteria;"Bacteroidetes";"Bacteroidia";"Bacteroidales";"Porphyromonadaceae";"Porphyromonadaceae"_unclassified;Otu012;
Otu2424	1	Bacteria;Firmicutes;Clostridia;Clostridiales;Ruminococcaceae;Oscillibacter;Otu175;