feat(ops): add RmsNorm with Iluvatar, NVIDIA, CPU backends and fp16/bf16 support

[zhangyue207]

• Add 'RmsNorm' operator with 'CPU', 'NVIDIA', and 'Iluvatar' implementations
• Support fp32/fp16/bf16 on NVIDIA and Iluvatar; fp32 only on CPU
• Add shared CUDA kernel (kernel.cuh) and backend-specific wrappers
• Extend generate_wrappers.py and CMake for RmsNorm
• Add tests covering backends and dtypes

[zhangyue207]

Iluvatar

root@iluvatar:/workspace/InfiniOps# pytest
==================================== test session starts ====================================
platform linux -- Python 3.10.18, pytest-9.0.2, pluggy-1.6.0
rootdir: /workspace/InfiniOps
configfile: pyproject.toml
plugins: anyio-4.9.0, cov-7.0.0, xdist-3.8.0, typeguard-4.4.4
collected 572 items                                                                         

tests/test_add.py ....................................                                [  6%]
tests/test_gemm.py .................................................................. [ 17%]
..................................................................................... [ 32%]
..................................................................................... [ 47%]
..................................................................................... [ 62%]
..................................................................................... [ 77%]
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.........                                                                             [ 93%]
tests/test_rms_norm.py ....................................                           [100%]

==================================== 572 passed in 1.61s ====================================

[zhangyue207]

Nvidia

(python3.10) zhangyue@server:~/InfiniOps$ pytest
========================================== test session starts ==========================================
platform linux -- Python 3.10.19, pytest-9.0.2, pluggy-1.6.0
rootdir: /home/zhangyue/InfiniOps
configfile: pyproject.toml
plugins: xdist-3.8.0, cov-7.0.0
collected 572 items                                                                                     

tests/test_add.py ....................................                                            [  6%]
tests/test_gemm.py .............................................................................. [ 19%]
................................................................................................. [ 36%]
................................................................................................. [ 53%]
................................................................................................. [ 70%]
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..................................                                                                [ 93%]
tests/test_rms_norm.py ....................................                                       [100%]

========================================== 572 passed in 2.20s ==========================================