KLQ: training-free rotation quantization beats SpinQuant on Llama 3.2 1B

Per the author's writeup, KLQ beats all training-free rotation-based quantization methods at W4A4KV4 bits. On Llama 3.2 1B, KLQ-quantized output surpasses SpinQuant and approaches ReSpinQuant without GPTQ/LDLQ rounding.