Added LiteLLM to the stack

Development/litellm/tests/local_testing/test_configs/custom_auth.py

@@ -0,0 +1,22 @@
+from litellm.proxy._types import UserAPIKeyAuth
+from fastapi import Request
+from dotenv import load_dotenv
+import os
+
+load_dotenv()
+
+
+async def user_api_key_auth(request: Request, api_key: str) -> UserAPIKeyAuth:
+    try:
+        print(f"api_key: {api_key}")
+        if api_key == "":
+            raise Exception(
+                f"CustomAuth - Malformed API Key passed in. Ensure Key has `Bearer` prefix"
+            )
+        if api_key == f"{os.getenv('PROXY_MASTER_KEY')}-1234":
+            return UserAPIKeyAuth(api_key=api_key)
+        raise Exception
+    except Exception as e:
+        if len(str(e)) > 0:
+            raise e
+        raise Exception("Failed custom auth")