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/legoroi.cpp

@@ -0,0 +1,17 @@
+#include "legoroi.h"
+
+// 0x10101368
+int g_roiConfig = 100;
+
+// OFFSET: LEGO1 0x100a9e10
+void LegoROI::SetDisplayBB(int p_displayBB)
+{
+  // Intentionally empty function
+}
+
+// OFFSET: LEGO1 0x100a81c0
+void LegoROI::configureLegoROI(int p_roi)
+{
+  g_roiConfig = p_roi;
+}
+