[chore][grafanacloudconnector] Add stability level per metric#42992

atoulme merged 6 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-collector-contrib:mainfrom

ChrsMark:grafanacloudconnector_metric_stabilityChrsMark/opentelemetry-collector-contrib:grafanacloudconnector_metric_stabilityCopy head branch name to clipboard