Pacbio fastq

[tkchafin]

Addresses https://github.com/sanger-tol/readmapping/issues/101

• Adds fastq (fq.gz or fastq.gz) as input options for PacBio
• Converted one of the test profile pacbio files to fastq for testing
• simplified filter_pacbio.nf a bit using multiMap
• Note this version still uses blastn for filtering

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).