Split nodes and systems configs for cosmos and substrate chains.

[Cherrett]

Currently, the node configs for cosmos and substrate chains hold a field whether to monitor the node's system. On the other hand, chainlink chains have separate configs for nodes and systems. We must modify the config logic for cosmos and substrate chains to also use separate configs. This would mean that the logic is uniform across all while solving issues from an API/UI perspective since the nodes and systems would have unique IDs.