rename vga to terminal and move to gfx folder

Makefile

@@ -8,7 +8,7 @@ CC=i686-elf-gcc
 bootstrap.o: bootstrap.s
 	i686-elf-as bootstrap.s -o bootstrap.o
 
-kernel.bin: bootstrap.o vga.o std/std.o std/kstd.o cpu/idt.o cpu/pic.o cpu/exception.o kernel.o
+kernel.bin: bootstrap.o gfx/terminal.o std/std.o std/kstd.o cpu/idt.o cpu/pic.o cpu/exception.o kernel.o
 	$(CC) -T linker.ld -o $@ -ffreestanding -O2 -nostdlib -lgcc $^
 
 iso: kernel.bin

gfx/terminal.c

@@ -1,4 +1,4 @@
-#include "vga.h"
+#include "gfx/terminal.h"
 #include "std/std.h"
 
 size_t terminal_row;

kernel.c

@@ -1,7 +1,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
-#include "vga.h"
+#include "gfx/terminal.h"
 #include "cpu/pic.h"
 #include "cpu/idt.h"
 #include "std/kstd.h"

std/kstd.c

@@ -2,7 +2,7 @@
 #include <limits.h>
 #include "std/kstd.h"
 #include "std/std.h"
-#include "vga.h"
+#include "gfx/terminal.h"
 
 int putchar(int ic) {
 	char c = (char) ic;