feat: gdt, attributes move, reorder

Added late gdt setup with initial tss
Moved attributes to include root
Reordered some imports

include/myke/util/power.h

@@ -5,8 +5,8 @@
 #ifndef NEW_KERNEL_POWER_H
 #define NEW_KERNEL_POWER_H
 
-#include <myke/attributes.h>
+#include <attributes.h>
 
-void noreturn power_shutdown();
+void att_noreturn power_shutdown();
 
 #endif //NEW_KERNEL_POWER_H