Igv reports

[soulj]

PR checklist

Add nf-core module for the igv-reports tool.

Closes #2173

• 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.
• Remove all TODO statements.
• Emit the versions.yml file.
• Follow the naming conventions.
• 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 <MODULE> --profile docker
    • nf-core modules test <MODULE> --profile singularity
    • nf-core modules test <MODULE> --profile conda
  • For subworkflows:
    • nf-core subworkflows test <SUBWORKFLOW> --profile docker
    • nf-core subworkflows test <SUBWORKFLOW> --profile singularity
    • nf-core subworkflows test <SUBWORKFLOW> --profile conda

[telatin]

I tested this PR with docker, it passed.
I checked the output files in the .nf-test/ directory and versions.yaml is fine, and the HTML document looks ok.

I wonder if the name should be igv-reports as it is in bioconda (see [naming conventions[(https://nf-co.re/docs/contributing/modules)).
UPDATE The linter clearly does not allow to add punctuation marks... I wonder if we can make it clearer in the docs?

✅ LGTM (but I'm new, so I'll let someone else double check :) )