Revision control

++ # Copyright (C) 2022 The Qt Company Ltd.
++ # SPDX-License-Identifier: BSD-3-Clause
++
++ add_subdirectory(virtualcan)
++ if(QT_FEATURE_socketcan)
++ add_subdirectory(socketcan)
++ endif()
++ if(QT_FEATURE_library)
++ add_subdirectory(passthrucan)
++ add_subdirectory(peakcan)
++ add_subdirectory(tinycan)
++ endif()
++ if(QT_FEATURE_library AND WIN32)
++ add_subdirectory(systeccan)
++ endif()
++ if(QT_FEATURE_library AND WIN32 AND NOT WINRT)
++ add_subdirectory(vectorcan)
++ endif()