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/openresponsestoplogprobs.md

@@ -0,0 +1,11 @@
+# OpenResponsesTopLogprobs
+
+Alternative token with its log probability
+
+
+## Fields
+
+| Field              | Type               | Required           | Description        |
+| ------------------ | ------------------ | ------------------ | ------------------ |
+| `token`            | *Optional[str]*    | :heavy_minus_sign: | N/A                |
+| `logprob`          | *Optional[float]*  | :heavy_minus_sign: | N/A                |