feat(hipkernelprovider): rocKE AOT kpack packaging & arch split

[BrianHarrisonAMD]

Summary

TheRock-side enablement for the rocKE AOT + kpack feature (AICK-1616). Three coupled areas, all inert until a rocm-libraries consumer produces the bundles:

1. Build deps: add rocm-kpack and amd-comgr to the hipkernelprovider BUILD_DEPS (the producer packs with rocm_kpack and compiles HSACO via libamd_comgr), plus rocm-kpack in RUNTIME_DEPS and a -DROCKE_KPACK_PYTHON_DIR source cache var. comgr is resolved by find_library on the rocke side.
2. Wheel packaging: register kpack in rocm_sdk/_dist_info.py and add kpack's directory to the Windows dlopen search path in both wheel load tests (libraries_test.py and devel_test.py) when loading a hipdnn plugin.
3. Per-arch split: flip hipkernelprovider to type = "target-specific" with split_databases = ["hipkernelprovider"], capture the per-arch bundle tree in the artifact TOML, and add hipkernelprovider to device_artifact_filter.

Install layout

rocKE per-arch bundles install next to the engine plugin at
lib/hipdnn_plugins/engines/hip_kernel_provider/rocke/<arch>/
(rocke_client_<arch>.kpack + .json sidecar + kernel-selection heuristics).
The host plugin .so is arch-neutral and stays generic; the per-arch tree splits
per-arch via the rocm-systems hipkernelprovider kpack handler.

Cross-repo sequence

1. rocm-systems feat(kpack): add hipkernelprovider per-arch split handler (AICK-1616) rocm-systems#8347: the hipkernelprovider kpack split handler.
2. TheRock (this PR): topology + artifact TOML + packaging + build deps.
3. rocm-libraries feat(hip-kernel-provider): rocKE AOT producer + kpack packaging (AICK-1473) rocm-libraries#9207: the rocKE AOT producer.

Hard ordering constraint: KPACK_SPLIT_ARTIFACTS defaults on, so the split runs
for hipkernelprovider and shells out --split-databases hipkernelprovider
against TheRock's pinned rocm-systems. This PR must bump the rocm-systems
gitlink to include #8347 before merge, otherwise the split invokes an unknown
handler and fails. Safe with rocKE disabled (no bundles): the split yields
generic-only with no empty per-arch artifacts (verified end-to-end).

Risk Assessment

Medium. The topology flip makes the split run for hipkernelprovider. Verified
safe when rocKE is disabled (generic-only) and when enabled (per-arch routing),
but it hard-requires the rocm-systems handler in the pinned gitlink. Do not merge
before #8347 lands and the gitlink is bumped. Build deps and wheel packaging are
additive and inert until a consumer produces bundles.

Testing Summary

• build_topology_test.py passes; BUILD_TOPOLOGY.toml and
  artifact-hipkernelprovider.toml parse and expose the target-specific type,
  split_databases, and the **/hip_kernel_provider/rocke/** include.
• CMake argument-routing check on the hipkernelprovider declare block:
  rocm-kpack/amd-comgr land in deps, -DROCKE_KPACK_PYTHON_DIR resolves.
• Packaging templates: _dist_info.py registers kpack without collision; both
  dlopen tests add the kpack directory.
• Paired multi-arch dry-run (gfx94x + gfx950) validates build, split, install,
  and provider tests end-to-end.

Testing Checklist

• Topology + artifact TOML parse and build_topology_test.py
• CMake declare-block arg routing (deps + ROCKE_KPACK_PYTHON_DIR)
• Packaging templates (_dist_info + dlopen search-path in both tests)
• Multi-arch dry-run: build + per-arch split + install + provider tests (pending)
• PR CI

Technical Changes

• ml-libs/CMakeLists.txt (hipkernelprovider): add rocm-kpack + amd-comgr to BUILD_DEPS, rocm-kpack to RUNTIME_DEPS, and -DROCKE_KPACK_PYTHON_DIR.
• ml-libs/artifact-hipkernelprovider.toml: the default lib component only captures shared libs, so add an explicit include = ["**/hip_kernel_provider/rocke/**"] so the per-arch bundles land in the runtime artifact.
• BUILD_TOPOLOGY.toml: hipkernelprovider to target-specific + split_databases = ["hipkernelprovider"], with a comment on why it is not arch-neutral.
• build_tools/build_python_packages.py: add hipkernelprovider to device_artifact_filter (it was already in libraries_artifact_filter).
• rocm_sdk/_dist_info.py + libraries_test.py + devel_test.py: kpack registration and the cross-wheel dlopen search-path fix.

JIRA ID : AICK-1616

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