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

.gitignore

@@ -0,0 +1,13 @@
+.venv/
+venv/
+src/*.egg-info/
+**/__pycache__/
+.pytest_cache/
+.python-version
+.DS_Store
+pyrightconfig.json
+**/.speakeasy/temp/
+**/.speakeasy/logs/
+.speakeasy/reports
+.env
+.env.local