[Feature]: Decision Relevant Climate Data Metrics

[acordonez]

Is your feature request related to a problem?

This is a new metrics subpackage.

Describe the solution you'd like

No response

Describe alternatives you've considered

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Additional context

No response

[lee1043]

Relevant document: Ullrich, P. (2023), Validation of LOCA2 and STAR-ESDM Statistically Downscaled Products