updated contigs depth filter, use a fraction of the largest contigs

Merge pull request metagenlab#21 from metagenlab/add_bakta_annotation

Add bakta annotation

upadted version

updated version

bug fix virulence report, contamination check

updated version name

add

merge

updated prokka version

script to collect general statistics for each sample (centrifuge, mas…

…h, n contigs, depth,...)