startop: Rewrite the run app bash script to python.

Test: python run_app_with_prefetch.py  -p com.android.settings -a com.android.settings.Settings -r fadvise -i input --debug --simulate
Test: python run_app_with_prefetch.py  -p com.android.settings -a com.android.settings.Settings -r fadvise -i input
Test: pytest run_app_with_prefetch_test.py

Bug: 135286022
Change-Id: I761e5d20292febcb47b7ca9f87d6847d77250f68