Create Configuration Query Endpoint

[mattp-swirldslabs]

As a Block Node operator
I want Block Node to expose a configuration endpoint
So that other components, operators or services can fetch the BN configuration

• If a Block Node exposes a configuration endpoint, something like a k8s BN Operator can query it to detect the state of the BN and trigger events
• This feature depends on the functionality built in Centralize Record Configuration Logging #471
• This feature may depend on a k8s firewall
• Consider whether we should add CI smoke test around fetching config from this endpoint
• Consider whether the Simulator should be used for integration tests