Added system.zookeeper_connection table for Keeper connection information

Why it matters

This feature allows users to monitor and inspect the status and details of Keeper connections directly from ClickHouse, aiding in better management and troubleshooting of distributed coordination services.

How to use it

Query the system.zookeeper_connection table using standard SQL syntax, for example:

sql<br>SELECT * FROM system.zookeeper_connection<br>

No additional configuration is required to enable this feature, as the table is built-in and automatically populated by ClickHouse.