Working with Feeds should manage related Trigger annotations

The CLI and OW web UIs add an annotation to triggers to associate them with feeds when creating new trigger feeds.

This means that when that trigger is deleted, the feed can be notified.

The SDK does not implement this behaviour. This means that if someone creates a new trigger feed, deletes it and tries to re-create it, it may fail based on the implementation of the feed provider.

The behaviour of the SDK should mirror the other OW tools. It should be possible to disable this behaviour using a parameter option, although it defaults to on.