feat: AMD GPU compute stress via rocm-validation-suite GST (GEMM)

- Add rocm-validation-suite, rocblas, rocrand, hip-runtime-amd,
  hipblaslt, comgr to ISO (~700MB, needed for HIP compute)
- RunAMDStressPack: run RVS GST (SGEMM ~31 TFLOPS/GPU) + bandwidth test
- Add rvs symlink in chroot setup hook
- Pin all new package versions in VERSIONS

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

iso/builder/config/hooks/normal/9000-bee-setup.hook.chroot

@@ -47,7 +47,7 @@ chmod +x /usr/local/bin/bee-log-run    2>/dev/null || true
 udevadm control --reload-rules 2>/dev/null || true
 
 # rocm symlinks (packages install to /opt/rocm-*/bin/)
-for tool in rocm-smi rocm-bandwidth-test; do
+for tool in rocm-smi rocm-bandwidth-test rvs; do
     if [ ! -e /usr/local/bin/${tool} ]; then
         bin_path="$(find /opt -path "*/bin/${tool}" -type f 2>/dev/null | sort | tail -1)"
         [ -n "${bin_path}" ] && ln -sf "${bin_path}" /usr/local/bin/${tool}