Add "related work" support

[ChrisBlankDe]

Context

Currently its not possible to read and write the "releated work" items of a version.

Description

Since REST API v3 there are methods for working with "releated work":

• Get related work
• Update related work
• Create related work
• Delete related work

Additional Information

This issue is related to JRACLOUD-87088. The new apis were announced here.