add StatelessSession.get() accepting multiple ids #4305

Job	Run time
Run examples in 'session-example' on MySQL	1m 51s
Test with MariaDB	2m 28s
Test with MySQL	1m 48s
Test with PostgreSQL	1m 44s
Run examples in 'session-example' on PostgreSQL	1m 52s
Test with MSSQLServer	2m 2s
Run examples in 'native-sql-example' on PostgreSQL	2m 1s
Test with CockroachDB	3m 15s
Test with Db2	2m 49s
Test with Oracle	1m 54s
Test with Java 17	1s
Test with Java 20	1s
Test with Java 21	1s
Test with Java 23	1s
Test with Java 24-ea	1s
Test with Java 25-ea	1s
	21m 50s

Provide feedback