MxVariable subclass for fsmovie setting (#147)

* LegoFullScreenMovie variable and related

* Changes after review
- Reduce scope on global strings
- Size assert for LegoGameState (based on the constructor references only)
- 1 -> TRUE for EnableFullScreenMovie

LEGO1/legogamestate.h

@@ -1,8 +1,12 @@
 #ifndef LEGOGAMESTATE_H
 #define LEGOGAMESTATE_H
 
+#include "decomp.h"
 #include "mxtypes.h"
+#include "legobackgroundcolor.h"
+#include "legofullscreenmovie.h"
 
+// SIZE 0x430 (at least)
 class LegoGameState
 {
 public:
@@ -15,7 +19,12 @@ public:
   __declspec(dllexport) void SetSavePath(char *p);
 
 private:
-  char *m_savePath;
+  char *m_savePath; // 0x0
+  undefined m_unk04[20];
+  LegoBackgroundColor *m_backgroundColor; // 0x18
+  LegoBackgroundColor *m_tempBackgroundColor; // 0x1c
+  LegoFullScreenMovie *m_fullScreenMovie; // 0x20
+  undefined m_unk24[1036];
 };
 
 #endif // LEGOGAMESTATE_H