feat(core): add message endpoint for inspector

[Alejandro-Morales]

Received and sent local messages can now be retrieved through http://localhost:<PORT>/messages endpoint

[Archento]

This topic currently needs more discussion so we'll postpone the review for now.

[Archento]

Nice! Good Progress :)
I've added some small proposals and we still need to discuss message retention but I think we're pretty much there.

[Archento]

We can probably add a serialiser to the Envelope History List as well that automatically returns the sorted list when we call .model_dump_json()

class EnvelopeHistory(BaseModel):
    envelopes: List[EnvelopeHistoryEntry]

    @field_serializer("envelopes", when_used="json")
    def serialize_envelopes_in_order(
        self, envelopes: List[EnvelopeHistoryEntry], _info
    ):
        return sorted(envelopes, key=lambda e: e.timestamp)

[Archento]

I'm inclined to move the storage of received messages back into the asgi module as it seems like it introduces unnecessary overhead by touching the variables twice when storing them.
How about we move the storing action to the asgi right in front of await dispatcher.dispatch(...)?
And since the envelope is not needed afterwards it would be ok to do the same approach as you did in the dispenser by using the env_dict and reuse that from there on.

[dominic22]

• please also return the agent address from the agent_info endpoint

[Archento]

It looks good now and feels rounded 👍🏻

[jrriehl]

Really nice! Just one question / suggestion about the data type for storing the history.