Changes to Metrics Data

the response property errors became optional for the status 429

the response property errors/items/code became optional for the status 429

the response property errors/items/message became optional for the status 429

added the new METRICS_BUSY enum value to the errors/items/code response property for the response status 429

added the new METRICS_QUERY_IN_PROGRESS enum value to the errors/items/code response property for the response status 429

added the new RATE_LIMIT_EXCEEDED enum value to the errors/items/code response property for the response status 429

added the non-success response with the status 503

added the new optional query request parameter status

added the optional property data/items/review_iterations to the response with the 200 status

added the optional property data/items/status to the response with the 200 status

added the optional property data/items/ready_for_review_at to the response with the 200 status