Code quality

• Should use current = bindable in control. karaoke
• Combine time tag manager with lyric manager. now lyric manager is focused on any property change in the lyric object. karaoke
• Use better way to get the list of lyrics in the lyric editor. karaoke
• Replace Enum.GetValues with utils. karaoke

Fix

• Fix language selector not register in the editor. karaoke

Editor

• Implement edit singer info. karaoke
• Enable to skip the start or end tag in record mode. karaoke
• Have order property in the lyric. karaoke
• Able to lock change order in the lyric editor. karaoke
• Adjust menu naming in the editor. karaoke