Refactor database handling and improve logging in ClickhouseApi and DbReplicator

- Enhanced the `recreate_database` method in ClickhouseApi to include retry logic for dropping and creating databases, improving robustness against concurrent operations.
- Updated logging to provide clearer insights during database creation and error handling.
- Modified DbReplicator to conditionally run real-time replication based on the `initial_only` flag, ensuring better control over replication processes.
- Improved logging for replication completion to include execution time, aiding in performance monitoring.

Author: jaredmdobson