fix the litellm init issue

litellm/proxy_server/proxy_cli.py

@@ -0,0 +1,20 @@
+import click
+from dotenv import load_dotenv
+load_dotenv()
+
+@click.command()
+@click.option('--port', default=8000, help='Port to bind the server to.')
+@click.option('--api_base', default=None, help='API base URL.')
+@click.option('--model', required=True, help='The model name to pass to litellm expects') 
+def run_server(port, api_base, model):
+    from proxy_server import app, initialize
+    initialize(model, api_base)
+    try:
+        import uvicorn
+    except:
+        raise ImportError("Uvicorn needs to be imported. Run - `pip install uvicorn`")
+    uvicorn.run(app, host='0.0.0.0', port=port)
+
+
+if __name__ == "__main__":
+    run_server()