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.

scripts/run_ngx_d3d12_probe.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ $# -ne 3 ]]; then
+  printf 'usage: %s PATH_TO_NGX_CORE_DLL PATH_TO_NVNGX_DLSS_DLL WRITABLE_APPDATA_DIRECTORY\n' "$0" >&2
+  exit 2
+fi
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+CORE_PATH="$(realpath "$1")"
+FEATURE_DLL_PATH="$(realpath "$2")"
+DATA_PATH="$(realpath -m "$3")"
+WINE_BIN="${WINE:-wine}"
+WINEPREFIX="${D4R_WINEPREFIX:-${TMPDIR:-/tmp}/d4r-wineprefix}"
+
+mkdir -p "$WINEPREFIX" "$DATA_PATH"
+"$ROOT/scripts/build_ngx_d3d12_probe.sh"
+CORE_WIN_PATH="$(WINEPREFIX="$WINEPREFIX" winepath -w "$CORE_PATH")"
+FEATURE_DLL_WIN_PATH="$(WINEPREFIX="$WINEPREFIX" winepath -w "$FEATURE_DLL_PATH")"
+DATA_WIN_PATH="$(WINEPREFIX="$WINEPREFIX" winepath -w "$DATA_PATH")"
+WINEPREFIX="$WINEPREFIX" WINEDEBUG="${D4R_WINEDEBUG:--all}" \
+  "$WINE_BIN" "$ROOT/build/ngx_d3d12_probe.exe" "$CORE_WIN_PATH" "$FEATURE_DLL_WIN_PATH" "$DATA_WIN_PATH"