feat: abstract the MetricsEvaluator

[sundy-li]

Every query engine has its expression framework to prune files.

The current Predicate in iceberg-rust is very simple, it's not powerful yet.

For example, it does not support Cast Expression and other complex expression.
such as: filter = abs( cast(id2 as int) ) > id2

Though this filter is rarely used, query engine can make its own effort to calculate the domain based on the stats (Such as ConstantFolder framework in databend)

[liurenjie1024]

Good point, I believe this could be achieved by allowing injecting metrics evaluator into table scan planning to help pruning more unnecessary data files.