add basic paging functionality

src/kernel.c

@@ -6,6 +6,7 @@
 #include "../include/string.h"
 #include "../include/pic.h"
 #include "../include/pit.h"
+#include "../include/paging.h"
 
 #include <stdint.h>
 
@@ -25,6 +26,8 @@ void kmain()
 	pit_init(100);
 
 	apply_pic_masks();
+
+	paging_init();
 	__asm__ __volatile__ ("sti");
 	printf("Kernel init sequence completed\n");