Add creation date time and optionally version ID for records to file:content structure

Please consider to add datetime property to file:content in mongodb and in JSON to be aware when document was physically uploaded to cloud. For records it would be nice to have version ID available as well (it is already in DB so only need to be exposed via REST endpoint).

As we are troubleshooting https://jira.nuxeo.com/browse/SUPNXP-51900

it would be nice to be able to pick documents that blobs were created during certain period of time. I see many applications for this property.

I understand date of blob creation can probably be somehow derived by comparing versions but this is too expensive even via enricher.

I might do it as addon but better it be a core feature as a big client is asking for this.

Does not need much work as it looks to me but may be very helpful.