Machine Learning APIs in Serverless

[picandocodigo]

The following is a list of available machine_learning APIs in Elasticsearch Serverless. The checked ones include a test in this repository.
Related: #17

• close_job
• delete_calendar_event
• delete_calendar_job
• delete_calendar
• delete_datafeed
• delete_data_frame_analytics
• delete_filter
• delete_job
• delete_trained_model_alias
• delete_trained_model
• estimate_model_memory
• evaluate_data_frame
• flush_job
• get_calendar_events
• get_calendars
• get_datafeeds
• get_datafeed_stats
• get_data_frame_analytics
• get_data_frame_analytics_stats
• get_filters
• get_jobs
• get_job_stats
• get_overall_buckets
• get_trained_models
• get_trained_models_stats
• infer_trained_model [410] {"error":{"root_cause":[{"type":"api_not_available_exception","reason":"uri [/_ml/trained_models/test_model/deployment/_infer] with method [POST] exists but is not available when running in serverless mode"}],"type":"api_not_available_exception","reason":"uri [/_ml/trained_models/test_model/deployment/_infer] with method [POST] exists but is not available when running in serverless mode"},"status":410}
• open_job
• post_calendar_events
• preview_datafeed
• preview_data_frame_analytics
• put_calendar_job
• put_calendar
• put_datafeed
• put_data_frame_analytics
• put_filter
• put_job
• put_trained_model_alias
• put_trained_model_definition_part
• put_trained_model
• put_trained_model_vocabulary
• reset_job
• start_datafeed
• start_data_frame_analytics
• start_trained_model_deployment
• stop_datafeed
• stop_data_frame_analytics
• stop_trained_model_deployment
• update_datafeed
• update_data_frame_analytics
• update_filter
• update_job

[picandocodigo]

Closing this as done, but also we'll get an automated report when #36 gets merged.