Add `validate_added_delete_files`

[CTTY]

Java has a validateDeleteFileForVersion which might be nice to have the same? https://github.com/apache/iceberg/blob/0f657edf12dc29f8487a679bfdd4210e9588d014/core/src/main/java/org/apache/iceberg/MergingSnapshotProducer.java#L295-L316

Originally posted by @xanderbailey in #2367

We should also think about guarding validations using configurable flags, so they can be skipped when needed