Tag scales for external data

[lucylq]

Summary

Currently scales are only saved to PTE segments (not PTD file). Allow them to be added to PTD as well.

Test plan

Test with linear module quantized with torchao quantize_

[lucylq]

add this for debugging purposes

[github-actions]

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[lucylq]

also debugging here

[metascroy]

Do you plan on landing this PR?

[lucylq]

@metascroy yeah - adding the tensor name to the hash for general debuggability until we can use names instead of hash

[pytorch-bot]

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❌ 2 New Failures

As of commit b56f3cf with merge base 92bf722 ():

NEW FAILURES - The following jobs have failed:

• pull / unittest / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest-editable / linux / linux-job (gh)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module

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[meta-codesync]

@lucylq has imported this pull request. If you are a Meta employee, you can view this in D87579688.