[3.13] gh-116622: Add Android test script (GH-121595) (#123061)

gh-116622: Add Android test script (GH-121595)

Adds a script for running the test suite on Android emulator devices. Starting
with a fresh install of the Android Commandline tools; the script manages
installing other requirements, starting the emulator (if required), and
retrieving results from that emulator.
(cherry picked from commit f84cce6f2588c6437d69a30856d7c4ba00b70ae0)

Co-authored-by: Malcolm Smith <smith@chaquo.com>