Monitor runtime metrics from OTel-instrumented apps with Datadog APM

OpenTelemetry (OTel) is an open source observability framework that provides APIs, SDKs, and tools for instrumenting applications and services. Datadog now supports the ingestion and visualization of runtime metrics from OTel-instrumented applications in Java, .NET, and Go. Runtime metrics offer deep visibility into application resource usage such as memory usage, garbage collection, parallelization, etc. By sending these metrics to Datadog, users can gain additional insights for troubleshooting issues throughout the platform. This complements Datadog's existing support for runtime metrics through native tracing libraries, allowing comprehensive visibility into all applications regardless of whether they are instrumented with Datadog or OTel SDKs.