Function communication_path_op_costs 

pub fn communication_path_op_costs(
    inputs: &[Tensor],
    contract_path: SimplePathRef<'_>,
    only_count_ops: bool,
    tensor_cost: Option<&[f64]>,
) -> ((f64, f64), f64)

Returns Schroedinger contraction time complexity using the critical path metric and using the sum metric. Additionally returns the space complexity.