Sync from v0.13

csrc/quantization/w8a8/per_token_group_quant_8bit.h

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+#pragma once
+#include <torch/all.h>
+
+// 8-bit per-token-group quantization helper used by both FP8 and INT8
+void per_token_group_quant_8bit(const torch::Tensor& input,
+                                torch::Tensor& output_q,
+                                torch::Tensor& output_s, int64_t group_size,
+                                double eps, double min_8bit, double max_8bit,
+                                bool scale_ue8m0 = false);