[SPARK-27713][SQL] Move org.apache.spark.sql.execution.* in catalyst to core

## What changes were proposed in this pull request?

`RecordBinaryComparator`, `UnsafeExternalRowSorter` and `UnsafeKeyValueSorter` now locates in catalyst, which should be moved to core, as they're used only in physical plan.

## How was this patch tested?

exist tests.

Closes apache#24607 from xianyinxin/SPARK-27713.

Authored-by: xy_xin <[email protected]>
Signed-off-by: Wenchen Fan <[email protected]>

Author: xy_xin