[External] Performing interventions from a different layer

[dangng2004]

Suggestion / Feature Request

Hi, I am currently using pyvene for a research project, which involves patching in the base representation a subspace from a different source layer (more concretely, using a BoundlessRotatedSpaceIntervention). However, this functionality seems to be unsupported currently? Because the setter hook fetches activations using the same key as the getter hook. Would it be possible for you guys to implement this feature? I am also happy to implement it and make a PR! Any pointer on what is the easiest way to do this is much appreciated.