Pacbio fastq

[tkchafin]

Addresses #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).

[BethYates]

Looks great - thanks!