Send KEYCODE_WAKEUP before ActionCreateDocumentUiTest

Make sure to properly set-up the device ahead of running
ActionCreateDocumentUiTest: "wake-up" the device, navigate to the home
screen, disable screen-offs etc.
For this introduce DocumentsUiTestBase "base" class, and make
ActionCreateDocumentUiTest extend it.

Bug: 259640894
Test: atest DocumentsUIGoogleTests
Change-Id: I0815e7f2780f437d7279789cfd79ede42be38a3b