Split flicker tests into groups

The flicker test suite grew and now trigger a treehuger SLO violation. To address this problem create different groups for different tests using: --module-arg <TEST SUITE>:include-annotation:<GROUP>

Where:
   <TEST SUITE> = FlickerTests or WMShellFlickerTests
   <GROUP> = com.android.server.wm.flicker.annotation.Group1 or com.android.server.wm.flicker.annotation.Group2 or com.android.server.wm.flicker.annotation.Group3

For example:

1) to run only tests in the first group in flicker use: `--module-arg FlickerTests:include-annotation:com.android.server.wm.flicker.annotation.Group1`

2) to run only the third group of tests from wmshell flicker: ``--module-arg FlickerTests:include-annotation:com.android.server.wm.flicker.annotation.Group3`

Bug: 180620475
Test: atest FlickerTests WMShellFlickerTests with the respective parameters
Change-Id: I82f668713ba262bafe2758e2c618bfc060cc2c8a