Add ability to retrieve chain ID from endpoints

[jgryffindor]

It would be useful to retrieve the tendermint chain ID from an info endpoint for a neighborhood.

Alternatives
We would need to manually pass the chain ID into the neighborhood config when adding them to Talib.

Additional Context
For example, when building infrastructure, we can label a node's metrics exporters using the tendermint chain ID from genesis.json. When querying Prometheus metrics through Talib, we can then dynamically pass the neighborhood's chain ID into the query and filter neighborhood metrics.