Kubernetes Monitoring Helm chart v4: Biggest update ever!

Kubernetes Monitoring Helm chart v4.0 redesigns configuration management for improved flexibility and maintainability. - Destinations changed from lists to maps, enabling better multi-cluster configuration merging and name-based overrides. - Collectors are now user-defined with composable presets (clustered, statefulset, daemonset) instead of hard-coded names. - Telemetry services can be explicitly deployed or reused from existing clusters with fine-grained control. - Cluster metrics feature is split into three focused features (clusterMetrics, hostMetrics, costMetrics) for cleaner configuration.

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