Feature request: patching single entVisualControllerDependency

[BrutalBuzzler]

When patching a component in an appearanceDefinition it would be useful to patch the related entVisualControllerDependency in the AppearanceVisualController as well to keep those in sync.

Since the AppearanceVisualController is "only" a component as well, it might be useful if this feature would only become active with a certain parameter in the .xl file or if the patch information would be provided as yaml in the .xl file instead of by archive.