check if ollama is online

src/utils/ollama.py

@@ -1,5 +1,20 @@
 import httpx
 from nicegui import ui
+from typing import Tuple
+
+
+async def status(url='http://127.0.0.1:11434') -> Tuple[bool, str]:
+    async with httpx.AsyncClient() as client:
+        try:
+            response = await client.get(f"{url}/api/version")
+            response.raise_for_status()
+            return True, response.json()["version"]
+        except httpx.RequestError as exc:
+            print(exc)
+            return False, 'Unknown'
+        except httpx.HTTPStatusError as exc:
+            print(exc)
+            return False, 'Unknown'
 
 
 async def available_models(url='http://127.0.0.1:11434'):