Create SILVA SSU mapping file

A mapping file is required in order to link the GTDB to results at SILVA. This is done through a TSV file parsed by the folks at SILVA.

This file is generated as follows:

• TBD

The final mapping file should be placed in /srv/home/ftp/public/gtdb/releaseXX/silva_mapping_rXX.tsv and the link to the latest SILVA mapping file updated in /srv/home/ftp/public/gtdb/. This linked file is used by the SILVA team, i.e.:

• https://data.ace.uq.edu.au/public/gtdb/silva_mapping_latest.tsv