### Description

The three commands:

```
              airflow users export /opt/airflow/dags/users.json &&
              airflow variables export /opt/airflow/dags/variables.json &&
              airflow connections export /opt/airflow/dags/connections.json
```

give back:

```
7 users successfully exported to /opt/airflow/dags/users.json
36 variables successfully exported to /opt/airflow/dags/variables.json
Connections successfully exported to /opt/airflow/dags/connections.json.
```


### Use case/motivation

Standardise output of "airflow connections export" to those of "airflow variables export" and "airflow users export"

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

)
        f.write(msg)
    if file_is_stdout:
        print("\nConnections successfully exported.", file=sys.stderr)
    else:
        print(f"Connections successfully exported to {args.file.name}.")
alternative_conn_specs = ["conn_type", "conn_host", "conn_login", "conn_password", "conn_schema", "conn_port"]
@cli_utils.action_cli
@providers_configuration_loaded
def connections_add(args):
    """Add new connection."""
    has_uri = bool(args.conn_uri)
    has_json = bool(args.conn_json)
    has_type = bool(args.conn_type)
    
    try:
        helpers.validate_key(args.conn_id, max_length=200)
    except Exception as e:
        raise SystemExit(f"Could not create connection. {e}")
    if not has_type and not (has_json or has_uri):
        raise SystemExit("Must supply either conn-uri or conn-json if not supplying conn-type")
    if has_json and has_uri:
        raise SystemExit("Cannot supply both conn-uri and conn-json")
    if has_type and args.conn_type not in _get_connection_types():
        warnings.warn(f"The type provided to --conn-type is invalid: {args.conn_type}")
        warnings.warn(
            f"Supported --conn-types are:{_get_connection_types()}."
            "Hence overriding the conn-type with generic"
        )
        args.conn_type = "generic"