feat: metricsV2 + oTel + prometheus sample and Grafana dashboard #6443

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	2m 45s
sample_operators_tests (sample-operators/metrics-processing)	6m 32s
sample_operators_tests (sample-operators/webpage)	3m 11s
sample_operators_tests (sample-operators/leader-election)	3m 18s
sample_operators_tests (sample-operators/tomcat-operator)	2m 41s
	18m 27s

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