Add INFERNAL for noncoding RNAs, diamond makedb optimizations

[olgabot]

Maybe also add INFERNAL for noncoding RNA search? https://github.com/czbiohub/nf-predictorthologs/issues/22

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 necessary, also make a PR on the nf-core/predictorthologs branch on the nf-core/test-datasets repo
• [ ] Ensure the test suite passes (nextflow run . -profile test,docker).
• [ ] Make sure your code lints (nf-core lint .).
• [ ] Documentation in docs is updated
• [ ] CHANGELOG.md is updated
• [ ] README.md is updated

[olgabot]

Added a test with --search_noncoding and it's taking FOREVER!! (been running for 58 minutes)

Mayybe, just maybe, searching ALL of Rfam is not the best idea. So I'm running the test on a local server to know what to filter Rfam down to.

[olgabot]

Merging because it was only test_download_refseq that ran out of time, and only on: push (on: pull_request worked fine for some reason)