Introduce feature inference TSV output file

[oschwengers]

As suggested in #314 , Bakta now internally stores all possible inference scores, i.e. bitsore, evalue, query coverage, subject coverage and sequence identity to.

As an extra level of assurance, we added a new TSV file *.inference.tsv containing this information with the following columns:

contig-id  feat-type  start  stop  strand  locus-tag  score  evalue  query-cov  subject-cov  identity