Initial commit: OpenRouter Python SDK

Auto-generated Python SDK for OpenRouter API, providing comprehensive client library with:
- Chat completions and streaming support
- Embeddings API
- Model and provider information
- API key management
- Analytics and usage tracking
- OAuth authentication flows
- Full type hints and error handling

docs/models/openairesponsesresponsestatus.md

@@ -0,0 +1,13 @@
+# OpenAIResponsesResponseStatus
+
+
+## Values
+
+| Name          | Value         |
+| ------------- | ------------- |
+| `COMPLETED`   | completed     |
+| `INCOMPLETE`  | incomplete    |
+| `IN_PROGRESS` | in_progress   |
+| `FAILED`      | failed        |
+| `CANCELLED`   | cancelled     |
+| `QUEUED`      | queued        |