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/d4r_play.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+# One-command launch: runs the game configured in d4r.ini's [Launch] section with all d4r settings
+# from the same file (see config/d4r.ini.default). Extra arguments go to the game.
+#   D4R_CONFIG=/path/to/other.ini scripts/d4r_play.sh
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+mapfile -t LAUNCH < <(python3 "$ROOT/scripts/d4r_config.py" --launch) || exit 2
+[[ ${#LAUNCH[@]} -eq 3 ]] || exit 2
+exec "$ROOT/scripts/run_game_d4r_optiscaler_proton.sh" "${LAUNCH[0]}" "${LAUNCH[1]}" "${LAUNCH[2]}" "$@"