Allow to find in which workfiles some products have been loaded.

Currently, there is no easy way of answering this question :

in which workfiles did we Load the product "Starship" ?

It can already be partially answered, if the workfile (which contains the loaded product) is published.

But to be really useful, it needs to work even if we don’t publish the workfile which contains the loaded products that we search.

Then it would need a GUI :-)

It was discussed here :

https://community.ynput.io/t/ayon-database-write-interaction/2682