fix(ollama.py): support format for ollama

litellm/llms/ollama_chat.py

@@ -146,12 +146,15 @@ def get_ollama_response(
             optional_params[k] = v
 
     stream = optional_params.pop("stream", False)
+    format = optional_params.pop("format", None)
     data = {
         "model": model,
         "messages": messages,
         "options": optional_params,
         "stream": stream,
     }
+    if format is not None:
+        data["format"] = format
     ## LOGGING
     logging_obj.pre_call(
         input=None,