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/responseformattextconfig.md

@@ -0,0 +1,25 @@
+# ResponseFormatTextConfig
+
+Text response format configuration
+
+
+## Supported Types
+
+### `models.ResponsesFormatText`
+
+```python
+value: models.ResponsesFormatText = /* values here */
+```
+
+### `models.ResponsesFormatJSONObject`
+
+```python
+value: models.ResponsesFormatJSONObject = /* values here */
+```
+
+### `models.ResponsesFormatTextJSONSchemaConfig`
+
+```python
+value: models.ResponsesFormatTextJSONSchemaConfig = /* values here */
+```
+