Reorganise and rename tests

[LouisLeNezet]

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 pipeline conventions in the contribution docs
• If necessary, also make a PR on the nf-core/phaseimpute branch on the nf-core/test-datasets repository.
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• Output Documentation in docs/output.md is updated.
• CHANGELOG.md is updated.
• README.md is updated (including new tool citations and authors/contributors).

[atrigila]

I don't understand the changes very well. They seem to be the same but the order of the things has been changed?

[LouisLeNezet]

They seem to be the same but the order of the things has been changed?

This is indeed the aim.
I wanted standardise and alphabetically ordered nf-test names so that nf-test stop reorder them when you launch it with --update-snapshot.