[rocm-libraries] ROCm/rocm-libraries#9253 (commit 8080a21)

feat(ck-tile): add AQuant and ABQuant grouped GEMM dispatcher
 with ctypes bridge (#9253)
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## Motivation

This PR extends the CK tile dispatcher with full quantization coverage
for grouped GEMM operations. Building on the BQuant dispatcher
introduced in #9166, this PR adds dispatcher bridges for AQuant (A-side
quantization) and ABQuant (both sides quantized), completing the
three-mode quantization dispatch surface for grouped GEMM on gfx950
(MI350X).

## Technical Details

Stacked on #9166 (BQuant grouped GEMM dispatcher). Adds AQuant (C =
dequant(A, AQ) @ B) and ABQuant (C = dequant(A, AQ) @ dequant(B, BQ))
dispatcher bridges following the same three-layer pattern (ctypes C API
→ Python dispatcher → codegen).

Each mode adds:

*_ctypes_lib.cpp — C API exposing the kernel to Python via ctypes
unified_*_codegen.py — generates kernel instantiations across the full
dtype/layout/quant-group matrix
*_utils.py — Python dispatcher handling argument validation, dtype
selection, and parallel hipcc builds via ThreadPoolExecutor
Example script and CPU-only unit tests
codegen_common.py is extended with shared epilogue selection helpers
reused across all three quant modes. CMakeLists.txt updated with build
targets for both new ctypes shared libraries.

Supported dtypes: fp8/bf8 activations, fp8i4/bf8i4 packed int4,
preshuffle layouts, and MX microscaling variants — targeting gfx950
(MI350X).

## Test Plan

CPU-only unit tests covering:

Kernel name generation across all dtype/layout/quant-group combinations
Config serialization and dimension helpers
Epilogue selection logic for AQuant and ABQuant variants
End-to-end example scripts (14_grouped_gemm_aquant.py,
15_grouped_gemm_abquant.py) with CPU reference verification for
correctness checks.

## Test Result

CPU unit tests pass for both AQuant and ABQuant dispatcher utilities.
## Submission Checklist

- [ ] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.