[frontend] Add MLIR result checking and JIT encapsulation

[sdh1014]

Summary

• Add a unified JIT wrapper to drive frontend import, compilation, and execution consistently.
• Introduce numeric correctness validation for ATen lowering and fix multiple graph-level semantic issues.
• Validate core ATen IR numerics to ensure semantic correctness of the core pipeline.
• Add a runtime/ component that provides RNG support via C++ external calls for random-related ops.
• Enable complex64 support to cover selected complex FFT-related operators.
  You can verify this change by running the following commands.

cd build
export BUDDY_MLIR_BUILD_DIR=$PWD
export LLVM_MLIR_BUILD_DIR=$PWD/../llvm/build
export PYTHONPATH=${LLVM_MLIR_BUILD_DIR}/tools/mlir/python_packages/mlir_core:${BUDDY_MLIR_BUILD_DIR}/python_packages:${PYTHONPATH}
cd ..
# Core Aten Ops
python3 tests/Python/AtenOps/run_numeric.py

TODO:The numerical verification for existing Aten Ops from torch.ops.aten has not yet been fully completed.

Checklist

• The code builds successfully
• Existing tests pass
• New tests are added where appropriate
• Code follows the project coding style
• Documentation is updated if needed