Update 24 files

- /Worksheet2_2/Makefile
- /Worksheet2_2/frame_buffer.c
- /Worksheet2_2/frame_buffer.h
- /Worksheet2_2/hardware_interrupt_enabler.s
- /Worksheet2_2/interrupt_asm.o
- /Worksheet2_2/interrupt_asm.s
- /Worksheet2_2/interrupt_handlers.o
- /Worksheet2_2/interrupt_handlers.s
- /Worksheet2_2/interrupts.c
- /Worksheet2_2/interrupts.h
- /Worksheet2_2/interrupts.o
- /Worksheet2_2/io.h
- /Worksheet2_2/io.o
- /Worksheet2_2/io.s
- /Worksheet2_2/keyboard.c
- /Worksheet2_2/keyboard.h
- /Worksheet2_2/keyboard.o
- /Worksheet2_2/kmain.c
- /Worksheet2_2/kmain.o
- /Worksheet2_2/loader.s
- /Worksheet2_2/pic.c
- /Worksheet2_2/pic.h
- /Worksheet2_2/pic.o
- /Worksheet2_2/types.h