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/quantization.md

@@ -0,0 +1,16 @@
+# Quantization
+
+
+## Values
+
+| Name      | Value     |
+| --------- | --------- |
+| `INT4`    | int4      |
+| `INT8`    | int8      |
+| `FP4`     | fp4       |
+| `FP6`     | fp6       |
+| `FP8`     | fp8       |
+| `FP16`    | fp16      |
+| `BF16`    | bf16      |
+| `FP32`    | fp32      |
+| `UNKNOWN` | unknown   |