Adressing issue 5142: propr/propr and propr/propd optionally output to GSEA

[BirkirRey]

main.nf files and template .R files updated with optional input parameter so that both modules[propr/propr and propr/propd] can output files for GEAS analysis [.gct and .cls]. The issue also specified an interest in generating an adjacency matrix for GREA analysis, but the details on that were unclear so I have not completed that.

PR checklist

Closes #5142

• [x] This comment contains a description of changes (with reason).
• [x] If you've fixed a bug or added code that should be tested, add tests!
• [x] If necessary, include test data in your PR.
• [x] Emit the versions.yml file.
• [x] Follow the naming conventions.
• [x] Follow the parameters requirements.
• [x] Follow the input/output options guidelines.
• Ensure that the test works with either Docker / Singularity. Conda CI tests can be quite flaky:
  • For modules:
    • [x] nf-core modules test <MODULE> --profile docker