feat: added cross compiler and moved headers to include dir

kernel/util/power.c

@@ -5,7 +5,7 @@
 #include <drivers/ports.h>
 #include <attributes.h>
 #include <libk/libk.h>
-#include "power.h"
+#include <util/power.h>
 
 void noreturn power_shutdown() {
     port_word_out(PORT_ACPI, PORT_ACPI_SHUTDOWN);