Arm Backend: Overlay FVP trace data in Model Explorer

[jmahbs]

Adds a script to enable the visualisation of Ethos U PMU trace data. The script retrieves the FVP trace output, vela's debug database and then uses this to create a pandas dataframe which of the run's duration cycles. This data is then overlayed in model explorer.

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

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• Long queue for ROCM runners, also B200 and XPU queueing is observed

❌ 1 Cancelled Job, 2 Unrelated Failures

As of commit 78c4037 with merge base 94ce147 ():

CANCELLED JOB - The following job was cancelled. Please retry:

• trunk / test-models-macos-mps / macos-job (gh)
  ##[error]The operation was canceled.

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• trunk / unittest-release / macos / macos-job (gh) (similar failure)
  [ FAILED ] WavLoaderTest.LoadAudioDataRejectsUnsupportedFormat

BROKEN TRUNK - The following job failed but was present on the merge base:

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

• trunk / unittest-release / linux / linux-job (gh) (trunk failure)
  [ FAILED ] WavLoaderTest.LoadAudioDataRejectsUnsupportedFormat

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[jmahbs]

@pytorchbot label "release notes: none"