Is your feature request related to a problem? Please describe.

report_metrics "X_y" syntax enable computing metrics on new data. Does skore check that the data is actually new ? Can skore help me check that the new data does not interesect with previous data (especially train data) ?

Describe the solution you'd like

A report on how two datasets differ could be super useful (number or rows/colums, but also how the data differs on specific data points with similar IDs (if that makes sense)...).

Describe alternatives you've considered, if relevant

No response

Additional context

from #1384