makes sql_table import from external sql_database source conditional on persist_snapshots argument, so users only have to run dlt init sql_database ... if they want to do an initial load
fixes destination for "source pipeline" in example pipelines to postgres using workaround, so it doesn't get replaced during dlt init
adds explicit credentials argument when creating sql_client from Pipeline object, so no destinations.postgres.credentials block is included in the generated secrets.toml
Fixes https://github.com/dlt-hub/dlt/issues/1490
sql_tableimport from externalsql_databasesource conditional onpersist_snapshotsargument, so users only have to rundlt init sql_database ...if they want to do an initial loadpostgresusing workaround, so it doesn't get replaced duringdlt initcredentialsargument when creatingsql_clientfromPipelineobject, so nodestinations.postgres.credentialsblock is included in the generatedsecrets.tomldltrequirement to version0.13, because it relies on the fix in https://github.com/dlt-hub/dlt/pull/1499/files