Support WindowGroupLimitExec (window-based limit pushdown)

[andygrove]

Spark inserts WindowGroupLimitExec to push a rank/row-number limit below a window (for example WHERE rn <= 10 over a ranking window). Comet does not support this operator today, so plans containing it fall back to Spark.

It is currently marked as planned in the operator support reference under Window.

[comphead]

related to #2551

[comphead]

This operator is a new TopK operator introduced in Spark 3.5

Before Spark 3.5

 Catalyst rewrote this to something like Limit(3, Window(Sort(t))), which combined with TakeOrderedAndProjectExec gave you the classic heap-based top-K over a single stream. But this only worked when there
  was no PARTITION BY — the moment you added one, you fell back to the naive full-sort-full-window plan.

[comphead]

Prob we can use PartitionedTopKExec DF operator to handle this