New provenance model & route

[hudson-newey]

With the creation of the audio event summary reports, the client will have to know how an audio event was created (recognisers, verified human input, etc...)

During a call, we have drafted a possible route & provenance model (subject to change)

//! GET /provenance/:id
//? response
{
    "id": 123,
    "name": "BirdNet",
    "version": "1.0.0",
    "description": "An avian event detector",
    "score": 0.5,
    "score_minimum": 0.1,
    "score_maximum": 0.8
}