Inter-Object Links

[benhg]

Is your feature request related to a problem? Please describe.
I'd like to be able to mark several objects as being linked to each other. This is useful in many situations - for example, if you've got both high and low resolution versions of an image that you always want to make sure are kept together.

Describe the solution you'd like
Something in the metadata system that allows me to examine links between objects.

Describe alternatives you've considered
You could do a poor-man's version of this using supported metadata - you could have something like a "group" which you then query by.

Additional context
Idealy, this should be searchable.