Add fastq seqkit sana pair

[vagkaratzas]

New fastq file sanitization/pre-processing subworkflow, to be used instead of just seqkit/sana, that automatically breaks paired-end reads (seqkit/sana can only process one file at a time), mixes with single-end reads in one channel, runs seqkit/sana and finally merges back original pairs with seqkit/pair.

PR checklist

• This comment contains a description of changes (with reason).
• If you've fixed a bug or added code that should be tested, add tests!
• If you've added a new tool - have you followed the module conventions in the contribution docs
• If necessary, include test data in your PR.
• Remove all TODO statements.
• Emit the versions.yml file.
• Follow the naming conventions.
• Follow the parameters requirements.
• Follow the input/output options guidelines.
• Add a resource label
• Use BioConda and BioContainers if possible to fulfil software requirements.
• Ensure that the test works with either Docker / Singularity. Conda CI tests can be quite flaky:
  • For modules:
    • nf-core modules test <MODULE> --profile docker
    • nf-core modules test <MODULE> --profile singularity
    • nf-core modules test <MODULE> --profile conda
  • For subworkflows:
    • nf-core subworkflows test <SUBWORKFLOW> --profile docker
    • nf-core subworkflows test <SUBWORKFLOW> --profile singularity
    • nf-core subworkflows test <SUBWORKFLOW> --profile conda

[prototaxites]

Looking really good @vagkaratzas! A few minor comments/questions

[prototaxites]

LGTM!

Two minor comments - I don't think they're blocking, but definitely the config file one would IMO be nice-to-have.

[jfy133]

Same as Jim, no major blockers now

[vagkaratzas]

Thank you both!