Add CLI tool to generate samplesheets

[KevinSayers]

Issue #, if available:

Description of changes: Add a tool for generating sample sheets (CSVs) from Sequence Stores.

• [ ] Add tests
• [ ] Add MinMaxMean option to generate a samplesheet to be used for optimization.
• [ ] Add template so samplesheet formatting can be customized
• [x] Additional arguments to select readsets
• [ ] Add to README
• [ ] Filter on filetype
• [ ] Filter on sequence size
• [ ] Handle fastq readpairs
• [ ] Filter on sequence size
• [ ] Filter on filetype fastq/bam/cram
• [ ] Validate S3 URIs

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