Allow multiple bracken profiles with different `-l` levels from the same kraken2 report

[MajoroMask]

Description of feature

Bracken allows user to get report on certain taxonomy level from a single kraken2 report via bracken -l LEVEL option. Introducing this feature into TaxProfiler can be useful.

TODO

• New parameter bracken_level: a string of bracken supported level(s) separated by comma, eg: 'G,S,S1'
  • Params checking in lib/WorkflowTaxprofiler.groovy
• Implant feature needs:
  • subworkflows/local/profiling.nf: ch_input_for_bracken to combine() level info then add to meta.bracken_level
  • subworkflows/local/standardisation_profiles.nf: ch_profiles_for_bracken to groupTuple() on different meta.bracken_level
• Change params using and publishDir accordingly in conf/modules.config

[MajoroMask]

It seems it has to be on hold until these two got fixed:

• https://github.com/nf-core/modules/issues/4246
• https://github.com/taxprofiler/taxpasta/issues/73