Revision control

++ # Copyright (C) 2022 The Qt Company Ltd.
++ # SPDX-License-Identifier: BSD-3-Clause
++
++ # Generated from manual.pro.
++
++ find_package(X11)
++ if(X11_FOUND)
++ add_subdirectory(x11vkbwrapper)
++ add_subdirectory(x11vkbtest)
++ else()
++ message("Manual tests x11vkbwrapper and x11vkbtest are not built due to missing X11 lib.")
++ endif()
++ add_subdirectory(quickcontrols2)
++ add_subdirectory(startupperformance)