Add pybindings for TextLLMRunner

[NickCao]

Summary

Fixes #12790

Tested in https://github.com/NickCao/executorch-benchmark/tree/text-llm-runner-pr

cc @larryliu0820 @mergennachin @cccclai @helunwencser @jackzhxng

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/17481

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❌ 3 New Failures, 179 Pending

As of commit b88ef54 with merge base cd32e42 ():

NEW FAILURES - The following jobs have failed:

• pull / test-openvino-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 4e9c33358aac2042f2db9163e0d64b30c4b0764435398d714b42557983f43f90 /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t bc6dfb3d319bfbaa996685dedd18ce1649d8445345525fe270614ae7177884c9 /exec failed with exit code 1
• pull / test-samsung-quantmodels-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 7b68b2742215dd56465a7954c893361cdcb150b12dc7eec1f6622c4fb8174b8f /exec failed with exit code 1

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[meta-cla]

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[NickCao]

@pytorchbot label "release notes: llm"

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[nil-is-all]

Hi @NickCao, thanks for the PR. Do check the lint runner check and address it.

[larryliu0820]

This error seems to be valid

error: static assertion failed: def_property family does not currently support keep_alive. Use a py::cpp_function instead.

Take a look?

[NickCao]

This error seems to be valid

error: static assertion failed: def_property family does not currently support keep_alive. Use a py::cpp_function instead.

Take a look?

No new invocations of def_property is introduced in this PR? rg keep_alive also returns nothing (only in third-party code).

[larryliu0820]

ok I'll help you merge this