Allow exposing multiple KIC debug server endpoints from a single process

[czeslavo]

As we're going to run multiple KIC instances in a single process, we want to make sure it's possible to run a single HTTP server for debugging purposes that will expose debug data for all the running instances. Preferably, that would be an endpoint prefixed with the KIC instance ID.

This will most likely require creating a centralized manager that will be responsible for dynamically registering/deregistering debug endpoints on every KIC instance creation/deletion.

Acceptance criteria

• When multiple KIC instances are created in a single process, there's a single HTTP server that exposes the instances' debug endpoints, having them separated dynamically based on their instance ID