[Suggestion] Metrics support

First of all, amazing project!

We've started experimenting with the project on an on-premise offline environment, so far it works great!

We need our extensions to send metrics and events to a centralized backend in order to have usage statistics for our company users.

Do you think it fits in the LLM LS or should it go in the extension itself?

Are you guys planning on adding support for other (optional & opt-in) telemetry events?

Thanks! 🙃