[EZ] Add logic to build Metal shader with debug info

[malfet]

By appending -frecord-sources -gline-tables-only to the compilation command

Helpful when debugging shaders compiled into libtorch

Test plan: Run
python ../tools/build_with_debinfo.py ../aten/src/ATen/native/mps/kernels/UpSample.metal ../aten/src/ATen/native/mps/operations/UpSample.mm
And then run following to capture shader and check that it contains debug info

import torch
import os
os.environ["MTL_CAPTURE_ENABLED"]="1"
inp = torch.rand(size=(6, 3, 10, 20), device="mps", dtype=torch.float32)
with torch.mps.profiler.metal_capture("bilinear2d"):
    out = torch.nn.functional.interpolate(x, scale_factor=(1.7,0.9), mode="bilinear")

[pytorch-bot]

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[dcci]

Thanks for this. I wonder why we're passing -gline-tables-only rather than -g0 or -g1 -- I assume we don't care about frame variables and other info for now (in particular for profiling).

[malfet]

@pytorchbot merge -f "Lint is green"

[pytorchmergebot]

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