Major refactor of codebase

include/arch/amd64/hal/ioapic.h

@@ -0,0 +1,13 @@
+#include "error.h"
+#include <stdint.h>
+void ioapic_init(void);
+void write_redir_entry(uint8_t reg, uint64_t data);
+kstatus set_redir_entry(uint8_t pin, uint8_t vector, uint8_t delivery, uint8_t trigger, uint8_t destination_field, uint8_t destination_mode);
+
+#define IOREGSEL    0x0
+#define IOWIN       0x10
+
+#define IOAPICID    0x0
+#define IOAPICVER   0x1
+#define IOAPICARB   0x2
+#define IOREDTBL(x) (0x10 + (x * 2)) // 0-23 registers