feat: introduce batch read for scylla #22140

Job	Run time
Unit	4m 18s
Warehouse Integration (bigquery)	2m 37s
Integration (oss)	2m 20s
Warehouse Integration (clickhouse)	2m 25s
Package Unit (jobsdb)	1m 57s
Integration (enterprise)	2m 13s
Warehouse Integration (datalake)	2m 25s
Package Unit (integration_test/docker_test)	3m 25s
Warehouse Integration (deltalake)	2m 35s
Package Unit (integration_test/kafka_batching)	4m 2s
Warehouse Integration (mssql)	2m 28s
Package Unit (integration_test/multi_tenant_test)	2m 58s
Package Unit (integration_test/reporting_dropped_events)	3m 22s
Warehouse Integration (azure-synapse)	2m 26s
Package Unit (integration_test/reporting_error_index)	3m 41s
Warehouse Integration (postgres)	2m 26s
Package Unit (integration_test/warehouse)	5m 57s
Warehouse Integration (redshift)	2m 25s
Package Unit (integration_test/tracing)	3m 47s
Warehouse Integration (snowflake)	2m 35s
Package Unit (integration_test/backendconfigunavailability)	3m 24s
Package Unit (integration_test/trackedusersreporting)	3m 34s
Package Unit (processor)	3m 45s
Package Unit (regulation-worker)	1m 58s
Package Unit (router)	4m 50s
Package Unit (services)	5m 55s
Package Unit (services/rsources)	3m 35s
Package Unit (services/dedup)	1m 27s
Package Unit (suppression-backup-service)	32s
Package Unit (warehouse)	4m 24s
All	1s
Coverage	1s
	1h 33m 48s

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