[platforms/virtual] Create output devices
Create output devices in virtual backend. For that the setVirtualOutputs call
can only come after the Wayland server has been initiliazied such that the
display exists to create the output and output device interfaces. Tests have
been adjusted for that.
98% tests passed, 3 tests failed out of 148 Total Test time (real) = 362.97 sec The following tests FAILED: 33 - kwin-testInternalWindow (Failed) 39 - kwin-testPointerInput (Failed) 101 - kwin-testMoveResize (Failed)
Failing of these tests looks unrelated to the change.
Maniphest Tasks: T11459
Differential Revision: https://phabricator.kde.org/D23477