[Infra] Configure app observability with monitoring solution

[MateuszNaKodach]

• Configure Grafana Cloud or DataDog (check developer pack offer) or LogDNA (https://www.logdna.com/)
• Configure Grafana and some data sourc (eg. Prometheus) locally in docker-compose
• Sample metrics: application published events per minute.
• HTTP requests
• Check with metrics we can get from NestJS / Node (http requests, memory etc.)

Useful resources:

• https://codersociety.com/blog/articles/nodejs-application-monitoring-with-prometheus-and-grafana#sample-code-repository

• https://grafana.com/grafana/dashboards/11159

• https://grafana.com/grafana/dashboards/11956

• https://github.com/statsd/statsd

• https://grafana.com/docs/grafana-cloud/fundamentals/

• https://codersociety.com/blog/articles/nodejs-application-monitoring-with-prometheus-and-grafana

• https://grafana.com/grafana/dashboards/11159

• https://ibm-cloud-architecture.github.io/b2m-nodejs/Prometheus-Grafana/

• If we want to use Prometheus (https://vimeo.com/564984518/1141ac9136) - don't care is about Java & Spring

• OpenTelemetry with NestJS instrucmentation: feat: Add NestJS instrumentation open-telemetry/opentelemetry-js-contrib#553

-https://clinicjs.org/documentation/