Add Application Signals .NET runtime metrics config

[bjrara]

Description of changes:
This PR allows customers to configure dotnet runtime metrics collection at cluster level.

Test

Configuration

--auto-instrumentation-config={"dotnet":{"runtime_metrics":{"enabled":"true"},"limits":{"cpu":"500m","memory":"128Mi"},"requests":{"cpu":"50m","memory":"128Mi"}},"java":{"runtime_metrics":{"enabled":"true"},"limits":{"cpu":"500m","memory":"64Mi"},"requests":{"cpu":"50m","memory":"64Mi"}},"nodejs":{"limits":{"cpu":"500m","memory":"128Mi"},"requests":{"cpu":"50m","memory":"128Mi"}},"python":{"runtime_metrics":{"enabled":"true"},"limits":{"cpu":"500m","memory":"32Mi"},"requests":{"cpu":"50m","memory":"32Mi"}}}

Result

kubectl get po payment-service-dotnet-67b7c6c679-mjz5p -oyaml | grep RUNTIME -A 1
    - name: OTEL_AWS_APPLICATION_SIGNALS_RUNTIME_ENABLED
      value: "true"

Configuration

--auto-instrumentation-config={"dotnet":{"runtime_metrics":{"enabled":"false"},"limits":{"cpu":"500m","memory":"128Mi"},"requests":{"cpu":"50m","memory":"128Mi"}},"java":{"runtime_metrics":{"enabled":"true"},"limits":{"cpu":"500m","memory":"64Mi"},"requests":{"cpu":"50m","memory":"64Mi"}},"nodejs":{"limits":{"cpu":"500m","memory":"128Mi"},"requests":{"cpu":"50m","memory":"128Mi"}},"python":{"runtime_metrics":{"enabled":"true"},"limits":{"cpu":"500m","memory":"32Mi"},"requests":{"cpu":"50m","memory":"32Mi"}}}

Result

kubectl get po payment-service-dotnet-67b7c6c679-k4hgl -oyaml | grep RUNTIME -A 1
    - name: OTEL_AWS_APPLICATION_SIGNALS_RUNTIME_ENABLED
      value: "false"

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