feat: gzip picard validate STDOUT

[a-frantz]

Describe the problem or feature in addition to a link to the issues.

the non summary mode of validate_bam can output multiple lines per read in the input BAM, using more disk than the input file. This passing that output through gzip.

This also removes the x2 factor on disk size allocation for this task. We may instead want to keep that x2 factor but only if we're in full report mode?

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