Atum server observability

[salamonpavel]

Introduces monitoring into Atum server. Computed metrics are exposed on two endpoints - /metrics for http related metrics and /zio-metrics for jvm and zio related metrics. The metrics are to be scraped by Prometheus and could be visualized in Grafana for instance.

Closes #166

[github-actions[bot]]

JaCoCo agent module code coverage report - scala 2.12.18

Overall Project	NaN% NaN%	:green_apple:

There is no coverage information present for the Files changed

[github-actions[bot]]

JaCoCo model module code coverage report - scala 2.12.18

Overall Project	NaN% NaN%	:green_apple:

There is no coverage information present for the Files changed

[github-actions[bot]]

JaCoCo server module code coverage report - scala 2.13.11

Overall Project	56.33% -66.8%	:x:
Files changed	0%	:x:

File	Coverage
HttpMonitoringConfig.scala	0% -3070%	:x:
JvmMonitoringConfig.scala	0% -3238.46%	:x:
Server.scala	0% -290%	:x:
HttpMetrics.scala	0% -2150%	:x:
ServerOptions.scala	0% -228%	:x:
Routes.scala	0% -106.75%	:x:
Main.scala	0% -69.23%	:x:
Constants.scala	0%	:green_apple:

[github-actions[bot]]

JaCoCo agent module code coverage report - scala 2.13.11

Overall Project	73.69%	:x:

There is no coverage information present for the Files changed

[github-actions[bot]]

JaCoCo model module code coverage report - scala 2.13.11

Overall Project	60.65%	:x:

There is no coverage information present for the Files changed