Add ldak/thinpredictors module

[lyh970817]

PR checklist

This PR adds the ldak/thinpredictors module. It runs LDAK (ldak6 --thin) to perform linkage-disequilibrium pruning on a PLINK binary fileset (bed/bim/fam) and emit a thinned predictor list, which downstream LDAK steps use to build weighted kinship matrices. It upstreams main.nf, meta.yml, environment.yml, and nf-test tests (including a stub), with topic-based version reporting. Tests reuse the existing public plink_simulated fixtures from nf-core/test-datasets; no new test data required.

• 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 (not necessary — reuses existing plink_simulated fixtures).
• Remove all TODO statements.
• Broadcast software version numbers to topic: versions - See version_topics
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• 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 ldak/thinpredictors --profile docker
    • nf-core modules test ldak/thinpredictors --profile singularity
    • nf-core modules test ldak/thinpredictors --profile conda

[chriswyatt1]

Great, checked through that, and it all looks correct.
Are we sure process_medium is the best generic setting to use?

[chriswyatt1]

Actually
Before we merge, what about bed and bim?

[chriswyatt1]

Need to solve where bed and bim are used in the module.

Ah sorry, just worked out that the names are implicit, so they are being used.

This is not an issue, they are being used in the script

[lyh970817]

Great, checked through that, and it all looks correct. Are we sure process_medium is the best generic setting to use?

I think process_medium is fine for this module but honestly I've been using it as a generic placeholder... I'll replace with more sensible settings for other modules - some do deserve process_high.