Currently we have lots of hardcoded places for each chain type:

type AppContext struct {
	chainsEnabled      []chains.Chain
	evmChainParams     map[int64]*observertypes.ChainParams
	bitcoinChainParams *observertypes.ChainParams
	solanaChainParams  *observertypes.ChainParams

        // ...
}

We should have a generic way of recording, registering, (de)provisioning chains, observers, and signers for zetaclient. Orchestrator should not be aware of concrete implementation.