Add kosli-list-trails to live-docs

[JonJagger]

Just noticed that the JSON returned by this live-docs call seem to have all IDs and no Names. Eg

   ...
   "org_id": "83acb2bc-2c26-48a7-8b87-90dfcce7",
   "flow_id": "f60c8f3f-67cd-4496-8e17-ed6fdb1e",
   "trail_id": "591aa98f-5ce9-420c-86f2-fbc0316f",
   ...

[FayeSGW]

Looking at the json, it looks like the ids are in the events for each trail - the trail itself does display its name (just higher up).

I think this is probably because when we constructed the cleaned json for the trail, the list of events is made using event.model_dump(), and the TrailEvent model only has the ids and not names.

We can probably write a json function for the trail events to use in the API which shows names instead? Can look at it tomorrow.