Hansong

Move threadpool to extension

2

Summary: threadpool (pthreadpool) is not related to XNNPACK itself. Reviewed By: mcr229 Differential Revision: D54372558

XNNPACK pytest cleanup

2

Summary: * Test file names should start with test_ to be collected by pytest * Add ops test to pytest.ini * Avoid Tester to be collected Differential Revision: D57463419

Add an activity for benchmarking only

9

Example usage: ``` adb shell am start -n com.example.executorchllamademo/com.example.executorchllamademo.Benchmarking --es "model_path" "/data/local/tmp/llama/stories_kv_sdpa_fp32_xnn.pte" --es "tokenizer_path" "/data/local/tmp/llama/tokenizer.bin" ``` Then ``` adb shell run-as com.example.executorchllamademo cat files/benchmark_results.txt ``` See result like ``` loadStart:...