Combine "nested relationship" and "relationship" buttons in Knowledge graph

[securitiz]

Use case

Functionally for a user, creating a "nested relationship" and "relationship" within the context of the knowledge graph is the same thing - just allows for different types of relationships. It would be very useful, and help avoid confusion, to combine these functionalities into one button for "relationships", that lists all the available relationship types

Current Workaround

Check both "relationships" and "nested relationships" to identify what kinds of relationships are possible between two selected objects

Proposed Solution

Instead, have one "relationships" button (as it used to be), but incorporate new relationship types into this button (which are currently found under "nested relationships"

Additional Information

@nor3th

If the feature request is approved, would you be willing to submit a PR?

Yes / No (Help can be provided if you need assistance submitting a PR)