fix/refac: use ollama /api/chat endpoint for tasks

backend/open_webui/utils/response.py

@@ -0,0 +1,14 @@
+from open_webui.utils.task import prompt_template
+from open_webui.utils.misc import (
+    openai_chat_completion_message_template,
+)
+
+from typing import Callable, Optional
+
+
+def convert_response_ollama_to_openai(ollama_response: dict) -> dict:
+    model = ollama_response.get("model", "ollama")
+    message_content = ollama_response.get("message", {}).get("content", "")
+
+    response = openai_chat_completion_message_template(model, message_content)
+    return response