fix(kofamscan): migrate to topic versions and add stub testing

[HReed1]

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, also make a PR on the nf-core/modules repository to update the 'modules.json' and make sure to update the tool version!
• Make sure your code lints (nf-core modules lint).
• Ensure the test suite passes (nextflow run . -profile test,docker --outdir <OUTDIR>).
• Usage Documentation in module.html is updated unless an exception is made.
• The test output is attached below and the test dataset is added to the nf-core/test-datasets repository.

Description

This PR standardizes the kofamscan module to the new topic: versions tuple architecture to resolve CI failures and meet project standards.

• Migrated manual versions.yml generation to tuple emission with dynamic version extraction using eval.
• Removed legacy versions.yml logic.
• Implemented robust stub: block.
• Updated snapshot assertions.
• Confirmed strict-syntax compliance and 100% nf-core modules lint pass.

Part of #4570

[SPPearce]

If you move the setup block up to the top (outside of the first test) then it will only run once (and won't require code duplication)

[SPPearce]

If you move the setup block up to the top (outside of the first test) then it will only run once (and won't require code duplication)