Seqera containers example

[pinin4fjords]

Add an example of Seqera Containers usage in a module (see https://nfcore.slack.com/archives/CE5LG7WMB/p1729699806378999?thread_ts=1729694853.053389&cid=CE5LG7WMB)

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[github-actions]

This PR is against the main branch ❌

• Do not close this PR
• Click Edit and change the base to dev
• This CI test will remain failed until you push a new commit

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Hi @pinin4fjords,

It looks like this pull-request is has been made against the nf-core/tools main branch.
The main branch on nf-core repositories should always contain code from the latest release.
Because of this, PRs to main are only allowed if they come from the nf-core/tools dev branch.

You do not need to close this PR, you can change the target branch to dev by clicking the "Edit" button at the top of this page.
Note that even after this, the test will continue to show as failing until you push a new commit.

Thanks again for your contribution!