As a WME Engineer, I want to update the new Realtime handler with Prometheus Metrics and bring it to parity with the old handler

TO DO

• Compare the old handler with the new handler and compile the missing metrics.
• Update the metrics package with the missing metrics.
• Implement newly added metrics in the new handler.
• Deploy to Dev.

QA

• Metrics seen in Prometheus and Grafana
• New handler and Old handler have metrics parity