release: prepare 0.1.5 with RDNA2 kernels and in-game DLSS/FSR switching

- Add native preset K kernels for gfx1030–gfx1036 using software matrix
  products, with fast and accuracy builds and RDNA2 motion kernels.
- Follow OptiScaler's DLSS and RR preset overrides, sanitize unsupported
  values and select the preset matching the feature's quality mode.
- Enable FSR 4 under NVIDIA GPU spoofing by exposing real AMD PCI IDs
  to OptiScaler and FidelityFX modules; bundle AMD's loader and upscaler.
- Keep K on native kernels in engine auto mode unless HIP is selected,
  and fall back to CUDA for M/L when shader_float8 is unavailable.
- Add native-engine K GPU timings, preset recreation harness controls
  and regression coverage; fix the input-wait test's glibc name clash.
- Update configuration, installer guidance and release documentation,
  simplify the README and move gameplay videos to docs/videos.md.

RDNA2 kernels remain untested on RDNA2 hardware; software matrix
arithmetic was validated against WMMA on RDNA3.

scripts/build_d4r_motion_kernels.sh

@@ -7,7 +7,7 @@ ROCM="${D4R_ROCM_DIR:-/opt/rocm}"
 CLANG="$ROCM/lib/llvm/bin/clang++"
 [[ -x "$CLANG" ]] || { echo "motion kernels need ROCm clang (D4R_ROCM_DIR)" >&2; exit 2; }
 mkdir -p "$OUT"
-for arch in gfx1100 gfx1101 gfx1102 gfx1103 gfx1200 gfx1201; do
+for arch in gfx1030 gfx1031 gfx1032 gfx1033 gfx1034 gfx1035 gfx1036 gfx1100 gfx1101 gfx1102 gfx1103 gfx1200 gfx1201; do
     "$CLANG" -x hip -nogpuinc -nogpulib --offload-device-only --offload-arch="$arch" \
         --no-gpu-bundle-output -O3 -mno-wavefrontsize64 -o "$OUT/$arch.hsaco" \
         "$ROOT/kernels/support/motion_dilate.hip"