The Sink terminal implements SaveMode functions (including SchemaSaveMode and DataSaveMode)

[xuepeng wang]

Issues Address*https://github.com/apache/seatunnel/issues/5390*
<https://github.com/apache/seatunnel/issues/5390>
Design document link
https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=263427916