Choose which columns to store min/max values for

[kpapadatos]

Description

It would be useful to be able to choose which columns may be used for file skipping so that min/max values are not stored for unused columns.

Use Case
In our use case, we have some large string columns that are never used for file skipping, and keeping min/max values for those results in unnecessarily large delta log files.

Related Issue(s)
Delta log files get unnecessarily big.

[ion-elgreco]

This is already supported with the configurations "delta.dataSkippingStatsColumns" or "delta.dataSkippingNumIndexedCols". See this PR #2428