Type check topology

[isra17]

I won't work on this in the following weeks, but something I would love to see in saturn eventually.

Inventory yield items from a specific type. They should effectiveley become generic through TopicMessage[T]. This type could then be checked with the pipeline being connected to ensure the T match the pipeline signature and raise a runtime error if that's not the case.

End goal is that once a topology is loaded, and mypy find no error, there should be no such thing as an inventory yield an unexpected type to a pipeline.