[Refactor] Separate out and be more rigorous about checking for managed lane network presence

[e-lo]

As a user, I'd like a one-method way of checking if a network has managed lanes

1. Add method to the roadway network to check for managed lanes presence

Idea for implementation

 @staticmethod
    def has_managed_lanes(links_df: GeoDataFrame) -> bool:
        ml_lanes_attributes = [
            i
            for i in links_df.columns.values.tolist()
            if i.lower().startswith("ml_lanes")
        ]

        if not ml_lanes_attributes:
            WranglerLogger.info("No managed lanes attributes found.")
            return False
        if links_df[ml_lanes_attributes].any() is not 0:
            WranglerLogger.info(
                "Max number of managed lanes is zero ({}).".format(
                    links_df[ml_lanes_attributes].max()
                )
            )
            return False
        return True

[e-lo]

Addressed in merged PR