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/legopathboundary.h

@@ -0,0 +1,9 @@
+#ifndef LEGOPATHBOUNDARH_H
+#define LEGOPATHBOUNDARH_H
+
+class LegoPathBoundary
+{
+  
+};
+
+#endif // LEGOPATHBOUNDARH_H