3 /x: Add cache-based model loading path to ETCoreMLModelManager (#18722)

[metascroy]

Summary:

This is diff 3/9 to implement the new caching system for CoreML, following the design doc here: fbcode/executorch/backends/apple/coreml/docs/new_cache_design.md

[ gdoc version: https://docs.google.com/document/d/1aKwTNj-L3-sAyBetL92RwJdSsSwA4KhvAQ3FO1zbguE/edit?tab=t.0#heading=h.3ecu6rvzx1z3 ]

The design doc contains detailed plans for each diff in the stack, see https://fburl.com/gdoc/actp9mcs for what this diff does.

Reviewed By: digantdesai

Differential Revision: D93044161

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/18722

• 📄 Preview Python docs built from this PR

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❌ 3 New Failures, 31 Pending, 4 Unrelated Failures

As of commit 74ac484 with merge base c7f1d72 ():

NEW FAILURES - The following jobs have failed:

• Cadence Build & Test / cpu-test / test-aot / test-aot (gh)
  backends/cadence/aot/tests/test_replace_ops_passes.py::TestReplaceOpsPasses::test_replace_transposed_conv_with_linear_0
• Cadence Build & Test / cpu-test / test-ops / test-ops (gh)
  examples/cadence/operators/test_g3_ops.py::ATenOpTestCases::test_g3_neg_out_4
• trunk / test-arm-backend-vkml (test_pytest_ops_vkml) / linux-job (gh)
  RuntimeError: Command docker exec -t b2bb23af9caaaf61a360c0d4fe79c8c6850341d95d0479f0511f1145142314f1 /exec failed with exit code 1

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)
  [ FAILED ] KernelTempMemoryAllocatorIntegrationTest.UsingTempMemoryAllocator
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[meta-codesync]

@metascroy has exported this pull request. If you are a Meta employee, you can view the originating Diff in D93044161.

[digantdesai]

Review automatically exported from Phabricator review in Meta.

[github-actions]

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[cymbalrush]

thank you!