Create am no-home-screen command.

The no-home-screen command allows checking if the device had
no home screen. This is needed for CTS tests to correctly
detect that ARC++ devices have no home screen.

This is ported from ag/1851936 since it could not cherry-pick cleanly.
Original CL: I9c933f0b684cc82c74db948edf592fd067091a31

Bug: 33456072
Test: manual - adb shell am no-home-screen reports false by default.
Change-Id: I3df465a34393aa6e3f2934722a66ad909979824d