Add API for GET /models list endpoint

[binardo]

Hi,

It would be good if your api had a list models endpoint (i.e. GET /models that just returns the list of models from this page https://docs.perplexity.ai/guides/model-cards, see below) so it could be used programaticly, save me updating my hardcoded list of model names when you update the models you provide.
Thanks

{
"data": [
{"id":"sonar-reasoning"...},
{"id":"sonar-pro"},
{"id":"sonar"},
{"id":"llama-3.1-sonar-small-128k-online"},
{"id":"llama-3.1-sonar-large-128k-online"},
{"id":"llama-3.1-sonar-huge-128k-online"}
]
}

[victorchang1001]

I would like to add that this should make using the Perplexity API on Open WebUI available as well, since they use the GET /api/models endpoint to retrieve all models. Open WebUI Docs