fix: throw error if trimmed fastq files are (nearly) empty

[kelly-sovacool]

Changes

At end of cutadapt rules, thrown an error if the trimmed fastq files have fewer than 10 lines

Issues

resolves #118

PR Checklist

(Strikethrough any points that are not applicable.)

• This comment contains a description of changes with justifications, with any relevant issues linked.
• [ ] Update docs if there are any API changes.
• Update CHANGELOG.md with a short description of any user-facing changes and reference the PR number. Guidelines: https://keepachangelog.com/en/1.1.0/