CloudWatch Alarm Based on an Anomaly Detector

This template creates an alarm that is based on an anomaly detector. It creates an AWS::CloudWatch::AnomalyDetector resource with the specified properties, including the MetricName, Namespace, and Stat. It then creates an AWS::CloudWatch::Alarm resource with the specified properties, including the AlarmDescription, AlarmName, ComparisonOperator, EvaluationPeriods, Metrics, ThresholdMetricId, and TreatMissingData.