enh: con-duct aggregate <paths or regex to info.json>

[asmacdo]

The idea would be to look at multiple duct execution logs and give useful stats about them.

For example if running many jobs of mriqc with duct (1 per subject) it would be nice to see the peak memory usage for any of the executions, average, and maybe sum?

[yarikoptic]

correct. con-duct ls could be used with some sorting (#308 ) to point to the max across for each particular column.

But with that, I think it is for different suite commands to provide such "summary" statement on aggregates... internally could indeed be an aggregate command which would be reused by both e.g. pp, ls, plot if --aggregate is provided.