Expose /metrics endpoints for all components deployed on OF

[riprasad]

Prometheus pulls metrics data from the targets from an http endpoint. To be able to collect metrics:-

1. Targets must expose /metrics(default) endpoint
2. Data available at /metrics endpoint must be in the format that prometheus understands

To enable the metrics for a Quarkus application; add micrometer-registry-prometheus dependency in pom.xml to expose metrics by default on q/metrics endpoint.

I am no expert on the UI front, but based on a quick google search express-prom-bundle and prom-client dependencies should help in exposing metrics for react applications in prometheus understable format. (https://blog.carlosnunez.me/post/how-to-sre-ify-your-react-app-with-prometheus/)