implement all DLL exports (as TODOs)

Now we can use our own compiled LEGO1.LIB rather than one generated from the original. Also implements a script that tests them to help ensure future commits don't break them.

LEGO1/mxtransitionmanager.cpp

@@ -19,3 +19,9 @@ long MxTransitionManager::Tickle()
 
   return 0;
 }
+
+// OFFSET: LEGO1 0x1004c470 STUB
+void MxTransitionManager::SetWaitIndicator(MxVideoPresenter *videoPresenter)
+{
+  // TODO
+}