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

[PatrikKozak]

Description

Adds plugin-relationship-object-ids package

• [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

[JarrodMFlesch]

Do we need to add another image for the test suite? Could we use an existing one?

[PatrikKozak]

Do we need to add another image for the test suite? Could we use an existing one?

I personally like that a test suite has it's own content, feels odd to me to use an image from a different suite. But I could go either way