[Kernel/APT] Stub some APT and threading stuff to make OoT go further

include/services/apt.hpp

@@ -12,6 +12,8 @@ class APTService {
 	// Service commands
 	void getLockHandle(u32 messagePointer);
 	void checkNew3DS(u32 messagePointer);
+	void enable(u32 messagePointer);
+	void notifyToWait(u32 messagePointer);
 
 public:
 	APTService(Memory& mem) : mem(mem) {}