Moved model backends to separate folders

added some model backend settings save/load

modeling/inference_models/openai/class.py

@@ -0,0 +1,32 @@
+import torch
+import requests
+import numpy as np
+from typing import List, Optional, Union
+
+import utils
+from logger import logger
+from modeling.inference_model import (
+    GenerationResult,
+    GenerationSettings,
+    InferenceModel,
+)
+
+from modeling.inference_models.openai_gooseai import model_backend as openai_gooseai_model_backend
+
+model_backend_name = "OpenAI"
+
+class OpenAIAPIError(Exception):
+    def __init__(self, error_type: str, error_message) -> None:
+        super().__init__(f"{error_type}: {error_message}")
+        self.source = "OpenAI"
+
+
+class model_backend(openai_gooseai_model_backend):
+    """InferenceModel for interfacing with OpenAI's generation API."""
+    
+    def __init__(self):
+        super().__init__()
+        self.url = "https://api.openai.com/v1/engines"
+    
+    def is_valid(self, model_name, model_path, menu_path):
+        return model_name == "OAI"