Allow special macros {uuid} and {database} in Replicated database ZooKeeper path

Why it matters

This feature allows dynamic and more flexible configuration of ZooKeeper paths in Replicated databases by enabling the use of {uuid} and {database} macros. This helps avoid hardcoding values and facilitates easier management and uniqueness of the replication paths.

How to use it

In the ZooKeeper path settings of a Replicated database, include the macros {uuid} and/or {database} in the path string. ClickHouse will automatically replace these macros with the database's UUID and database name respectively when establishing replication.