Support Catalog Store

[melin]

Support Catalog Store. Dynamically load the catalog. For example, if there are multiple MySQL data sources, based on the data source specified in the SQL, dynamically register the JDBC catalog.

select * from mysql_catalog_1.demos.users

Flink Catalog Store: https://nightlies.apache.org/flink/flink-docs-stable/docs/dev/table/catalogs/#catalog-store

[shagunt]

Is this issue already assigned if not i would like to work on it, how to know if it is already approved issue. Thanks
cc: @melin

[melin]

No assignment. Please first create an Issue at https://issues.apache.org/jira/projects/SPARK/issues, and then submit PR.