add dining room ui,logic,service
	deleted:    catering_man/app/UI/CMainScreen.py
	deleted:    catering_man/app/UI/desktop/CMainFrame.py
	deleted:    catering_man/app/UI/dining_room/CAreaSetting.py
	deleted:    catering_man/app/UI/dining_room/CDiningTable.py
	deleted:    catering_man/app/UI/login/CLogin.py
	deleted:    catering_man/app/logic/desktop/CDataMainFrame.py