Some of the commands in cuttlefish-runner.sh, like updating mesa and
ANGLE, are not specific to cuttlefish, in general they can be executed
on any Android device under test.
So split those commands out of cuttlefish-runner.sh and put them into an
android-runner.sh script.
For example, when testing a physical Android device instead of a virtual
device, a mesa-ci job will call android-runner.sh directly instead of
cuttlefish-runner.sh
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34111>
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