Change name of output of Jena Models from "ingest" to something meaningful

[hauschke]

Is your feature request related to a problem? Please describe.
When exporting multiple Jena Models, it is close to impossible to distinguish the downloaded files afterwards. This makes the investigation of the Jena Models unneccessary cumbersome, because everything is just named "ingest".

The function can be found here:
https://yourvivo.org/ingest?action=contentModels&submit=Main+Store+Models

Direct trigger:
https://yourvivo.org/ingest?action=outputModel&modelName=http%3A%2F%2Fvitro.mannlib.cornell.edu%2Fdefault%2Fvitro-kb-2

Describe the solution you'd like
The downloaded files should have follow more precise naming convention including a temporal component and the name of the model.

Examples:

• download_vitro-kb-2_2022-05-06
• 2022-05-06-095204_vitro-kb-2

[gneissone]

I export files like this from time to time and agree this would be a nice enhancement. I have submitted a pull request.