Config: use appropriate in-built data types

use lists instead of strings if multiple values should/can be given for an attribute
- steps
- input files for MG/MT
- summary_steps
- filtering: filter
- sortmerna: files
- hmm_DBs
- COGS
- binners
use a boolean instead of a string for true/false attributes
- e.g. settingsLocked
  - edit: use True or False in the snakemake command when overwriting parameters with --config
update/expand config validation schema

Edited Aug 25, 2021 by Valentina Galata