feat: adds `plugin-relationship-object-ids` package

[PatrikKozak]

Description

Adds plugin-relationship-object-ids package to beta (v3)

• [x] I have read and understand the CONTRIBUTING.md document in this repository.

Type of change

• [x] Chore (non-breaking change which does not add functionality)

Checklist:

• [x] I have added tests that prove my fix is effective or that my feature works
• [x] Existing test suite passes locally with my changes