Support waiting for an expected package to be launched

In addition to the window name, in the case were we don't know what the exact window that will be launched is but only the package (e.g. when we have trampolining task or activities).

Fixes: 267487691
Test: atest FlickerLibTest
Change-Id: I5546c9d2dddd328c592734880bf9a735a8a15dad
1 file changed