[executorch][nvidia][tensorrt][9/n] Implement preprocess basic implementation

[shoumikhin]

Stack from ghstack (oldest at bottom):

• [executorch][nvidia][tensorrt][25/n] Share CUDA stream across TRT delegates #17936
• [executorch][nvidia][tensorrt][24/n] Add power and unary converters with model improvements #17935
• [executorch][nvidia][tensorrt][23/n] Add benchmark infrastructure #17934
• [executorch][nvidia][tensorrt][22/n] Add correctness tests #17933
• [executorch][nvidia][tensorrt][21/n] Add comparison and slice converters #17932
• [executorch][nvidia][tensorrt][20/n] Add bmm converter #17931
• [executorch][nvidia][tensorrt][19/n] Add SDPA converter #17930
• [executorch][nvidia][tensorrt][18/n] Add layer_norm and pixel_shuffle converters #17929
• [executorch][nvidia][tensorrt][17/n] Add embedding, expand, upsample converters #17928
• [executorch][nvidia][tensorrt][16/n] Enable MobileNetV3 model support #17927
• [executorch][nvidia][tensorrt][15/n] Add linear model support with addmm and permute_copy converters #17926
• [executorch][nvidia][tensorrt][14/n] Add additional converters (mul, sub, div, mm, relu) #17925
• [executorch][nvidia][tensorrt][13/n] Add examples, C++ runner and CI workflow #17924
• [executorch][nvidia][tensorrt][12/n] Add C++ runtime infrastructure #17923
• [executorch][nvidia][tensorrt][11/n] Complete preprocess integration with serialization #17922
• [executorch][nvidia][tensorrt][10/n] Add blob serialization format with I/O metadata #17921
• -> [executorch][nvidia][tensorrt][9/n] Implement preprocess basic implementation #17920
• [executorch][nvidia][tensorrt][8/n] Add TensorRTCompileSpec dataclass #17919
• [executorch][nvidia][tensorrt][7/n] Add converter utils and add converter #17918
• [executorch][nvidia][tensorrt][6/n] Add converter registry infrastructure #17917
• [executorch][nvidia][tensorrt][5/n] Integrate partitioner #17916
• [executorch][nvidia][tensorrt][4/n] Add operator support base class #17915
• [executorch][nvidia][tensorrt][3/n] Add TensorRT partitioner stub #17914
• [executorch][nvidia][tensorrt][2/n] Add TensorRT backend stub #17913
• [executorch][nvidia][tensorrt][1/n] Add directory structure and initialization #17912

Implement the basic preprocess method for the TensorRT backend.

Differential Revision: D93275049

[pytorch-bot]

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❌ 18 New Failures, 3 Unrelated Failures

As of commit f39705f with merge base 01d21fa ():

NEW FAILURES - The following jobs have failed:

• Test CUDA Builds / check-all-cuda-builds (gh)
  Process completed with exit code 1.
• Test CUDA Builds / export-model-cuda-artifact (nvidia, parakeet-tdt, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 50399f3935b6564aeb8b660c23776e8ed455fb69c280a0f3fa29ad377ae582a2 /exec failed with exit code 1
• Test CUDA Builds / export-model-cuda-artifact (nvidia, parakeet-tdt, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 2e3468da84f62663c42c504d20d4e5e9371f12a37eaf4e8cab1abd3d927272d3 /exec failed with exit code 1
• Test CUDA Builds / export-model-cuda-artifact (openai, whisper-small, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t 7769761b32f22446cade43dca3a72366e792784d9f1e0fcbb312b3b91caa2241 /exec failed with exit code 1
• Test CUDA Builds / export-model-cuda-artifact (Qwen, Qwen3-0.6B, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 5670c9184d665123080058379f1e42e0a4efa83eebf3449d259ad7b6566e6860 /exec failed with exit code 1
• Test CUDA Builds / export-model-cuda-artifact (Qwen, Qwen3-0.6B, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t 1df96c9aea42529238bea8747e95c263617a201e29d36ce9af4c337e6566e79c /exec failed with exit code 1
• Test CUDA Builds / test-executorch-cuda-build-12.8 / linux-job (gh)
  RuntimeError: Command docker exec -t c92f9c2035d69f0f0b60630a566fcc849fc8a902ce9f0480a72819368a3f0d82 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (sdpa) / linux-job (gh)
  RuntimeError: Command docker exec -t e83d72fec67f6ce42eea92b8507afe8009d2c9af0c1f7eb900e190f2f7049afa /exec failed with exit code 1
• Test CUDA Windows Export and E2E / export-model-cuda-windows-artifact (nvidia, parakeet-tdt, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t ea4169d1472fbd4309e8a524487f46aad3a29bbec68eb853475e2843b0e954d2 /exec failed with exit code 1
• Test Metal Backend / export-model-metal-artifact (mistralai, Voxtral-Mini-3B-2507, non-quantized) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (mistralai, Voxtral-Mini-3B-2507, quantized-int4-metal) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (mistralai, Voxtral-Mini-4B-Realtime-2602, quantized-int4-metal) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (nvidia, parakeet-tdt, non-quantized) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• Test Metal Backend / export-model-metal-artifact (nvidia, parakeet-tdt, quantized-int4-metal) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (openai, whisper-large-v3-turbo, non-quantized) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (openai, whisper-large-v3-turbo, quantized-int4-metal) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / export-model-metal-artifact (openai, whisper-small, quantized-int4-metal) / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?
• Test Metal Backend / test-executorch-metal-build / macos-job (gh)
  Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under '/Users/ec2-user/runner/_work/executorch/executorch/test-infra/.github/actions/check-disk-space'. Did you forget to run actions/checkout before running your local action?

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

• periodic / test-models-linux (cmake, mv3, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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

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

• pull / unittest / macos / macos-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'mkldnn' object has no attribute '_is_mkldnn_acl_supported'
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'mkldnn' object has no attribute '_is_mkldnn_acl_supported'

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