OAI: Add ability to send dummy models

Some APIs require an OAI model to be sent against the models endpoint.
Fix this by adding a GPT 3.5 turbo entry as first in the list to cover
as many APIs as possible.

Signed-off-by: kingbri <bdashore3@proton.me>

main.py

@@ -60,6 +60,8 @@ async def list_models():
     draft_model_dir = draft_config.get("draft_model_dir")
 
     models = get_model_list(model_path.resolve(), draft_model_dir)
+    if model_config.get("use_dummy_models") or False:
+        models.data.insert(0, ModelCard(id = "gpt-3.5-turbo"))
 
     return models