Add LegacyFreeBusyStatus for CalendarItem
Add LegacyFreeBusyStatus for CalendarItem

WinRb/Viewpoint,Gerd82/Viewpoint,Windermere/Viewpoint,makandra/Viewpoint,bcherrington/Viewpoint,gshutler/Viewpoint,Datacom/Viewpoint,Tsoondev/Viewpoint,Strauman/Viewpoint,albertdang/Viewpoint,getoutreach/Viewpoint