new module: gatk4/analyzecovariates

[thomasisensee]

PR checklist

This new module wraps GATK's AnalyzeCovariates, which can: "Evaluate and compare [two or optionally three] base quality score recalibration (BQSR) tables." Output is a pdf for visual comparison of BQSR tables, and the corresponding data within a CSV file from which the pdf was generated.

Closes #10054

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[SPPearce]

All looks good to me.