feat: add d4r inference engines and Windows parity tooling

Add native K/M/RR inference engines, HIP kernels, replay and validation
harnesses, and Windows DLSS setup and runtime support. Include GPU
profiling tools, build and packaging scripts, platform integration
patches, and implementation documentation.

kernels/m/rrlite_enc2_4x4.hip

@@ -0,0 +1,7 @@
+// fast numerics: intermediate activations f16 (no FP8 re-quantisation), f32 accumulation through GEMM chains
+#define SWIN_NO_Q8
+#define SWIN_F32ACC
+#define SWIN_MAX_VGPR 192
+#define SWIN_MLP_R(NW) 2
+#include "swin_block.h"
+SWIN_MODULE_W(rrlite_enc2_4x4, 96, 4, 8, 128, false, CommonParams, 0)