NXP backend: Add support for aten.conv_transpose2d.input

[StrycekSimon]

Summary

Adds quantization and conversion support for aten.conv_transpose2d.input operator.

Test plan

Added new unit tests that covers this feature.

cc @robert-kalmar @JakeStevens @digantdesai @roman-janik-nxp

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15146

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❌ 2 New Failures, 1 Cancelled Job

As of commit e75efc3 with merge base 2c706f1 ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 4ae86efdd64836778c896ec4f775258f9a4afd6baa3e808edf90066be578a7e5 /exec failed with exit code 1
• Test CUDA Builds / export-voxtral-cuda-artifact / linux-job (gh)
  RuntimeError: Command docker exec -t f38c5cb910cb054f015847233aa5d5f2219a5d93f05b5e07139acc31d9c76faf /exec failed with exit code 2

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

• pull / unittest / macos / macos-job (gh)
  ##[error]The operation was canceled.

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[StrycekSimon]

@pytorchbot label "release notes: nxp"

[StrycekSimon]

@pytorchbot label "module: nxp"

[StrycekSimon]

@roman-janik-nxp can you please check this PR feature-wise if I haven't missed anything during cherry-picking?

[MartinPavella]

LGTM