OOLT.ICT.20192.Group8 Paint mini-project Video demo: https://husteduvn-my.sharepoint.com/:v:/g/personal/hoang_nv176762_sis_hust_edu_vn/Eb2DLzZXmtxJhsr2GQ0Ms40B_RWoqfUaMLTH3x_F30I8Fw?e=So88U7 Member assignments: Tien Duc: Tools for drawing on canvas, undo/redo, file operations Tri Hung: Design GUI Viet Hoang: Set initialization