Consolidate algorithm_output.tsv and unassigner_output.tsv

[Ulthran]

Currently running unassign /path/to/input.fasta --output path/to/output will produce four output files with two being:

algorithm_output.tsv

query_id	species_name	typestrain_id	region_mismatches	region_positions	probability_incompatible	mu1	num_references	mu2	nonregion_positions_in_subject	max_nonregion_mismatches
1	Sphingomonas sediminicola	AB258386	48	1409	1	0.03439716312056738	5	0.03439716312056738	31	-12
2	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
...

unassigner_output.tsv

query_id	species	typestrain_id	region_mismatches	region_positions	probability_incompatible
1	Sphingomonas sediminicola	AB258386	48	1409	1
2	NA	NA	NA	NA	NA
...

where one appears to be completely contained within the other. We should only output one or else make it clearer in the naming convention that one is an expanded version of the other.