Whatshap/phase: add pedigree input

[tetedange13]

whatshap/phase can use a pedigree file to improve phasing

Relevant documentation : https://whatshap.readthedocs.io/en/latest/guide.html#phasing-pedigrees

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!
• Remove all TODO statements.
• Follow the naming conventions.
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• Follow the input/output options guidelines.
• 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 NO DOCKER AVAILABLE
    • nf-core modules test <MODULE> --profile singularity
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