feat: irq interrupts; basic kb driver

kernel/include/io.h

@@ -4,6 +4,11 @@
 #ifndef IO_H
 #define IO_H
 
+#define MASTER_COMMAND 0x20
+#define MASTER_DATA    0x21
+#define SLAVE_COMMAND  0xA0
+#define SLAVE_DATA     0xA1
+
 static inline void outb(unsigned short port, unsigned char val) {
     __asm__ volatile( 
         "outb %0, %1" 

kernel/include/keyboard.h

@@ -0,0 +1,8 @@
+#ifndef KEYBOARD_H
+#define KEYBOARD_H
+
+#include "types.h"
+
+void kb_handler(Registers *regs);
+
+#endif

kernel/include/pic.h

@@ -4,4 +4,8 @@
 #ifndef PIC_H
 #define PIC_H
 
+#include "types.h"
+
+u16 pic_remap();
+
 #endif