* A wrapper crate for prometheus client
* Initial integration of metrics for mempool
* Merge mempool metrics imports
* Add cli flag to enable metrics
* Add nomos metrics service for serving metrics
* Use nomos prometheus metrics in the node
* Rename metrics to registry where applicable
* Expose metrics via http
* Featuregate the metrics service
* Style and fail on encode error
* Add metrics cargo feature for mempool
Al Liu
gusto
Daniel Sanchez