Adding the task start time in messenger file

[Hoda1394]

Right now the messenger gives only the time that a task is ended and whether it is errored or not. It would be useful if the start time is also added. here is an example of setting a messenger with AuditFlag.PROV gives;

{ "@context": "https://raw.githubusercontent.com/nipype/pydra/master/pydra/schema/context.jsonld", "@id": "uid:f3347534cb9f461fb6d8f710ff74f1de", "endedAtTime": "2020-11-19T12:17:23.382187", "errored": false }

[satra]

there should be a corresponding startedAtTime message as well:

https://github.com/nipype/pydra/blob/master/pydra/engine/audit.py#L49

[Hoda1394]

Thanks for the pointer. I think it does what I need. I will try it and report the results here.