Link entries together

I like to keep my password database organized with groups. I recently ran into a situation where I wanted the same entry to be duplicated between groups,so I can have for example an "email addresses" group,but have my work email entry in both my "email addresses" group and my "work" group.

I realize I can just copy the entry, but then if changes are made to the entry in one group, they're not reflected in the other (since it's effectively a new entry) and things get difficult to manage and keep track of.

I think it would be a useful feature then to be able to link entries together so any changes made to them are synced.

I thought about using the tag feature,but it's not quite the same since as far as I can tell tags are used purely for searchability, and not organisation

No files, tests, or entry points are identified in the issue. Start by locating how KeePassDX stores and displays entries and groups, then define how linked entries should behave; done requires an agreed representation and tests showing updates remain synchronized across groups.

Written by the indexing model from the issue text.