Add scaffolding step

[ksenia-krasheninnikova]

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
• [ ] Make sure your code lints (nf-core lint).
• [ ] Ensure the test suite passes (nextflow run . -profile test,docker --outdir <OUTDIR>).
• [ ] Usage Documentation in docs/usage.md is updated.
• [ ] Output Documentation in docs/output.md is updated.
• [ ] CHANGELOG.md is updated.
• [ ] README.md is updated (including new tool citations and authors/contributors).

[ksenia-krasheninnikova]

Juicer Tools pre software can be implemented as an nf-core module. It's implemented as a java jar file now, but according to the guidelines a bioconda package should be implemented. This is an example of module for software originally existing as a java file https://github.com/nf-core/modules/blob/master/modules/nf-core/malt/run/main.nf