add client_name with mcp_clickhouse (#21)

Author: mshustov

Diff for: mcp_clickhouse/mcp_env.py

@@ -112,6 +112,7 @@ def get_client_config(self) -> dict:
             "verify": self.verify,
             "connect_timeout": self.connect_timeout,
             "send_receive_timeout": self.send_receive_timeout,
+            "client_name": "mcp_clickhouse",
         }
 
         # Add optional database if set
@@ -138,4 +139,4 @@ def _validate_required_vars(self) -> None:
 
 
 # Global instance for easy access
-config = ClickHouseConfig()
+config = ClickHouseConfig()