- Parse the `RelayChainCli` before starting the runner. This is helpful
  in case of executing `polkadot-parachain ... -- --help` or if the
  relay chain command is malformed
- Set `no_binary_name(true)`
- Use the same `base_path` as the parachain
  This will lead to using paths like for example:
  - /tmp/substratexaqpXv/chains/bridge-hub-kusama
  - /tmp/substratexaqpXv/chains/kusama
  instead of:
  - /tmp/substratexaqpXv/chains/bridge-hub-kusama
  - /tmp/substratexaqpXv/polkadot/chains/kusama

For consistency. For example `start_node()` uses
`FullNetworkConfiguration::<_, _, Net>::new(&parachain_config.network)`

And move logic to polakdot-parachain