Migrate Execute Detector to SDK using SDKRestClient

[owaiskazi19]

Is your feature request related to a problem?

We missed adding this API as it's not documented here: https://opensearch.org/docs/latest/observing-your-data/ad/api/#search-detector
Part of opensearch-project/OpenSearch#5224
What solution would you like?

Migrate the Execute Detector Rest API to Extensions SDK using SDKRestClient.

Use the implementation of #353 as a reference. Add new issues for any steps you skip.

Implement the following API endpoints:

• POST _plugins/_anomaly_detection/detectors/{detector_id}/_run

Tasks:

• Implement RestExecuteAnomalyDetectorAction
• Test Api's

[vibrantvarun]

curl -XPOST "localhost:9200/_extensions/_ad-extension-1/detectors/INtM7YcBaIfZEad772kL/_run?pretty" -H "Content-Type:application/json" --data '{"period_start":1683140573000,"period_end":1683440563000,"detector_id":"INtM7YcBaIfZEad772kL","detector":{"name":"test-detector","description":"Test detector","time_field":"@timestamp","indices":["server_log"],"filter_query":{"match_all":{"boost":1.0}},"detection_interval":{"period":{"interval":1,"unit":"Minutes"}},"window_delay":{"period":{"interval":1,"unit":"Minutes"}},"shingle_size":8,"schema_version":0,"feature_attributes":[{"feature_id":"5AxM7YcBd-oyyz7PxEvR","feature_name":"test","feature_enabled":true,"aggregation_query":{"test":{"avg":{"field":"jvmGcTime"}}}}],"last_update_time":1683313454846,"detector_type":"SINGLE_ENTITY"}}}'



{
  "anomalyGrade": 0.0,
  "confidence": 0.9792133299337574,
  "anomalyScore": 0.8974177927602132,
  "error": null,
  "features": [
    {
      "feature_id": "5AxM7YcBd-oyyz7PxEvR",
      "feature_name": "test",
      "data": 109.4872163134643
    }
  ],
  "rcfTotalUpdates": 1434,
  "detectorIntervalInMinutes": 1,
  "relativeIndex": 0,
  "relevantAttribution": [
    0.0
  ],
  "pastValues": null,
  "expectedValuesList": null,
  "likelihoodOfValues": null,
  "threshold": 1.1
}