Function forest_filecoin::daemon::set_snapshot_path_if_needed

async fn set_snapshot_path_if_needed(
    config: &mut Config,
    chain_config: &ChainConfig,
    epoch: i64,
    auto_download_snapshot: bool,
    download_directory: &Path,
) -> Result<()>

If our current chain is below a supported height, we need a snapshot to bring it up to a supported height. If we’ve not been given a snapshot by the user, get one.

An Err should be considered fatal.