Get the latest ML results for assets

Get the latest ML results for the provided assets.

The steps for determining the latest ML results for each asset are as follows:

• Get the most recent task that has a status of complete or needs_review, where the
  entries that relate to the task are ML-complete. To determine the most recent task, we
  compare the tasks' actions' end_times.
• Get all ML-complete entries for each latest task. We can determine if an entry is
  ML-complete by checking the entry's ml_job_status metadata field. A value of
  completed indicates that the entry is ML-complete.
• Get the maximum detection_severity for the asset, by looking at all ML-complete
  entries' annotations.