Add property editor sheets and item library entries for Multimedia.

MediaPlayer {
    id: playMusic
    source: "music.wav"
    audioOutput: AudioOutput {}
}

Video {
    id: video
    width : 800
    height : 600
    source: "video.avi"
}

VideoOutput {
   id: videoOutput
    anchors.fill: parent
    CaptureSession {
        camera: Camera {
            id: camera
            focusMode: Camera.FocusModeAutoNear
            customFocusPoint: Qt.point(0.2, 0.2) // Focus relative to top-left corner
        }
        videoOutput: videoOutput
    }
}