Bulk Operation

FLINK-12625 set current catalog and database after registering tables and views in SQL CLI

FLINK-12625 add end-to-end tests for "USE CATALOG" and "USE DATABASE" commands in SQL CLI

FLINK-12625 modify 'use database' syntax in SQL CLI to be consistant with standard sql

FLINK-12625 remember current catalog and database in SQL CLI SessionContext

FLINK-12625 add commented-out defaults to sql client yaml file to make it easier for users to adopt

FLINK-12625 support "use catalog" and "use database" in SQL CLI

FLINK-12625 support 'show catalogs' and 'show databases' functionalities end-2-end in TableEnvironment and SQL CLI

FLINK-12625 deprecate descriptor, validator, and factory of ExternalCatalog

FLINK-12625 support 'properties' in catalog entries in SQL CLI yaml file

FLINK-12625 Support 'default-database' config for catalog entries in SQL CLI yaml file

FLINK-12625 Add descriptor, validator, and factory for HiveCatalog

FLINK-12625 Add descriptor, validator, and factory for GenericInMemoryCatalog

FLINK-12625 Document how to configure and use catalogs in SQL CLI

FLINK-12625 Client should not register table-source-sink twice in TableEnvironment

FLINK-12625 Support catalogs in SQL-Client yaml config file