Stub in an initial OpenAI Responses API

Signed-off-by: Ben Browning <bbrownin@redhat.com>

llama_stack/providers/registry/openai_responses.py

@@ -0,0 +1,25 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+from typing import List
+
+from llama_stack.providers.datatypes import Api, InlineProviderSpec, ProviderSpec
+
+
+def available_providers() -> List[ProviderSpec]:
+    return [
+        InlineProviderSpec(
+            api=Api.openai_responses,
+            provider_type="inline::openai-responses",
+            pip_packages=[],
+            module="llama_stack.providers.inline.openai_responses",
+            config_class="llama_stack.providers.inline.openai_responses.config.OpenAIResponsesImplConfig",
+            api_dependencies=[
+                Api.models,
+                Api.inference,
+            ],
+        ),
+    ]