### Description

Airflow Connection testing using airflow CLI would be very useful  , where users can quick add test function to test connection in their applications. It will benefit CLI user to create and test new connections right from instance and reduce time on troubleshooting any connection issue. 

### Use case/motivation

airflow connection testing using airflow CLI , similar function as we have in Airflow CLI. 
example:  airflow connection test "hello_id"

### Related issues

N/A

### 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)

with pytest.raises(SystemExit):
            self.parser.parse_args(["connections", "export"])
    def test_cli_connections_export_should_return_error_for_invalid_format(self):
        with pytest.raises(SystemExit):
            self.parser.parse_args(["connections", "export", "--format", "invalid", "/path/to/file"])
    def test_cli_connections_export_should_return_error_for_invalid_export_format(self, tmp_path):
        output_filepath = tmp_path / "connections.invalid"
        args = self.parser.parse_args(["connections", "export", output_filepath.as_posix()])
        with pytest.raises(SystemExit, match=r"Unsupported file format"):
            connection_command.connections_export(args)
    @mock.patch.object(connection_command, "create_session")
    def test_cli_connections_export_should_raise_error_if_create_session_fails(
        self, mock_create_session, tmp_path
    ):
        output_filepath = tmp_path / "connections.json"
        def my_side_effect():