Keep track of ingest took statistic in bulk operation type.

Keep track of ingest took statistic in bulk operation type.: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Currently I check the service time (~~which I think is took field from bulk response~~), but that includes also the time it took the index the documents.