Add FastQ file checkpoint

[vrennie]

As discussed in the TORCH meeting sometimes files are empty or corrupted.

We should add a tool that checks file size and corruption

[abhi18av]

Continuing the discussion here from the what @TimHHH mentioned in #120 (comment)

I compared the download stats on the bioconda recipe pages for biopet-validatefastq and fastq_utils as a proxy for community usage of these tools and it seems that fastq_utils has a more consistent download stats and peaks across versions when compared to biopet-validatefastq which has only one published version.