Documentation: Unclear which engine(s) implement which nodes

My understanding was that there would be a set of "core" KHR_interactivity nodes that would have to be implemented by each engine claiming KHR_interactivity support.

However, in the current implementation, e.g. the logging engine does not support animation nodes:

I saw there have been recent changes from `lifecycle/*` to `event/*`, so maybe the Logging engine implementation just hasn't been updated yet.

Start by comparing the logging engine's support for animation nodes with the KHR_interactivity expectations, paying attention to the reported transition from lifecycle/* to event/*. Document which engines implement which nodes and clarify whether core nodes are required for an engine claiming KHR_interactivity support.

Written by the indexing model from the issue text.