feature request: print samplesheet format as part of --help

[cmatKhan]

this is a very nice tool -- thank you!

Unless I am misunderstanding the docs, the samplesheet schema is not included when the user enters --help. Arguably, including it is too verbose for a help message, but I believe I would find it useful.

[nvnieuwk]

Maybe a new function could be added that prints out the samplesheet, this way you can separate them from the summary. something called printSamplesheet for example

[cmatKhan]

I'm thinking not the entire samplesheet, but rather just the field names and whether or not they are required. Something like:

Input samplesheet fields:

sample (required)
group (optional)
fastq_1 (required)
fastq_2 (optional)

Printing the whole samplesheet would definitely muddy the output.

The use case would be: a user has possibly used a workflow before, and vaguely remembers what the samplesheet fields are, but wants a quick confirmation from the cmd line

[nvnieuwk]

I agree that would be way better, thanks for the suggestion!