Add architectural document
Add architectural document

SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera,SeonghoBaek/RealtimeCamera