[Spike] Management API: investigate path multiplexing mechanisms

[paullatzelsperger]

Not every controller of the API changes on every version bump, so we may need to make the same controller available under multiple paths.

Here evaluate different path multiplexing approaches (custom interceptor vs simply duplicating the controller classes) with special attention to the following aspects:

• will both (old and new) controllers be represented in the generated openapi document?
• how easy/straight-forward is it to introduce a new major version of the API?
• how easy/straight-forward is it to remove a deprecated version of the API?

[github-actions]

This issue is stale because it has been open for 14 days with no activity.