[PACE-58] Better hierarchical entity support for Datahub

[bvdeenen]

pace list databases --catalog datahub-on-dev -o json | jq '.databases[]|.display_name,.id'
null
"urn:li:dataset:(urn:li:dataPlatform:hdfs,SampleHdfsDataset,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:hive,SampleHiveDataset,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:hive,fct_users_created,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:hive,fct_users_deleted,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:hive,logging_events,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:kafka,SampleKafkaDataset,PROD)"
null
"urn:li:dataset:(urn:li:dataPlatform:s3,project/root/events/logging_events_bckp,PROD)"

_{From SyncLinear.com | PACE-58}